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82945152 = 273289809
BaseRepresentation
bin1001111000110…
…10010010000000
312210002001100200
410330122102000
5132213221102
612121445200
72025010413
oct474322200
9183061320
1082945152
1142902a14
1223940800
1314251a94
14b031b7a
15743651c
hex4f1a480

82945152 has 96 divisors (see below), whose sum is σ = 241663500. Its totient is φ = 27303936.

The previous prime is 82945147. The next prime is 82945169. The reversal of 82945152 is 25154928.

It can be written as a sum of positive squares in 2 ways, for example, as 82737216 + 207936 = 9096^2 + 456^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102124 + ... + 102932.

Almost surely, 282945152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82945152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120831750).

82945152 is an abundant number, since it is smaller than the sum of its proper divisors (158718348).

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

82945152 is a wasteful number, since it uses less digits than its factorization.

82945152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918 (or 903 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 82945152 is about 9107.4229066185. The cubic root of 82945152 is about 436.1109612932.

82945152 divided by its sum of digits (36) gives a palindrome (2304032).

The spelling of 82945152 in words is "eighty-two million, nine hundred forty-five thousand, one hundred fifty-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 89 96 128 144 178 192 267 288 356 384 534 576 712 801 809 1068 1152 1424 1602 1618 2136 2427 2848 3204 3236 4272 4854 5696 6408 6472 7281 8544 9708 11392 12816 12944 14562 17088 19416 25632 25888 29124 34176 38832 51264 51776 58248 72001 77664 102528 103552 116496 144002 155328 216003 232992 288004 310656 432006 465984 576008 648009 864012 931968 1152016 1296018 1728024 2304032 2592036 3456048 4608064 5184072 6912096 9216128 10368144 13824192 20736288 27648384 41472576 82945152