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493246720 = 2851812129
BaseRepresentation
bin11101011001100…
…101100100000000
31021101010112022001
4131121211210000
52002232343340
6120535553344
715136346041
oct3531454400
91241115261
10493246720
1123347461a
1211922b854
137b25c285
14497188c8
152d48229a
hex1d665900

493246720 has 72 divisors (see below), whose sum is σ = 1188565560. Its totient is φ = 196116480.

The previous prime is 493246693. The next prime is 493246723. The reversal of 493246720 is 27642394.

It can be written as a sum of positive squares in 4 ways, for example, as 10653696 + 482593024 = 3264^2 + 21968^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 493246720.

It is not an unprimeable number, because it can be changed into a prime (493246723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230616 + ... + 232744.

It is an arithmetic number, because the mean of its divisors is an integer number (16507855).

Almost surely, 2493246720 is an apocalyptic number.

493246720 is a gapful number since it is divisible by the number (40) 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 493246720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594282780).

493246720 is an abundant number, since it is smaller than the sum of its proper divisors (695318840).

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

493246720 is a wasteful number, since it uses less digits than its factorization.

493246720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331 (or 2317 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 493246720 is about 22209.1584712253. The cubic root of 493246720 is about 790.1109281823.

The spelling of 493246720 in words is "four hundred ninety-three million, two hundred forty-six thousand, seven hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 181 256 320 362 640 724 905 1280 1448 1810 2129 2896 3620 4258 5792 7240 8516 10645 11584 14480 17032 21290 23168 28960 34064 42580 46336 57920 68128 85160 115840 136256 170320 231680 272512 340640 385349 545024 681280 770698 1362560 1541396 1926745 2725120 3082792 3853490 6165584 7706980 12331168 15413960 24662336 30827920 49324672 61655840 98649344 123311680 246623360 493246720