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72859488 = 2531379739
BaseRepresentation
bin1000101011110…
…11111101100000
312002002122102120
410111323331200
5122123000423
611121344240
71543203222
oct425737540
9162078376
1072859488
1138144459
1220498080
1312130230
149968412
1565e2ee3
hex457bf60

72859488 has 96 divisors (see below), whose sum is σ = 208857600. Its totient is φ = 22104576.

The previous prime is 72859487. The next prime is 72859511. The reversal of 72859488 is 88495827.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 72859488.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72859487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98223 + ... + 98961.

It is an arithmetic number, because the mean of its divisors is an integer number (2175600).

Almost surely, 272859488 is an apocalyptic number.

72859488 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72859488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104428800).

72859488 is an abundant number, since it is smaller than the sum of its proper divisors (135998112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72859488 is a wasteful number, since it uses less digits than its factorization.

72859488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844 (or 836 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 51.

The square root of 72859488 is about 8535.7769417904. The cubic root of 72859488 is about 417.6655979510.

The spelling of 72859488 in words is "seventy-two million, eight hundred fifty-nine thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 78 79 96 104 156 158 208 237 312 316 416 474 624 632 739 948 1027 1248 1264 1478 1896 2054 2217 2528 2956 3081 3792 4108 4434 5912 6162 7584 8216 8868 9607 11824 12324 16432 17736 19214 23648 24648 28821 32864 35472 38428 49296 57642 58381 70944 76856 98592 115284 116762 153712 175143 230568 233524 307424 350286 461136 467048 700572 758953 922272 934096 1401144 1517906 1868192 2276859 2802288 3035812 4553718 5604576 6071624 9107436 12143248 18214872 24286496 36429744 72859488