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872939793 = 31126452721
BaseRepresentation
bin110100000010000…
…000000100010001
32020211120221021110
4310002000010101
53241433033133
6222342043533
730426602655
oct6402000421
92224527243
10872939793
1140882a650
122044195a9
1310bb1082b
1483d14a65
1551983c63
hex34080111

872939793 has 8 divisors (see below), whose sum is σ = 1269730656. Its totient is φ = 529054400.

The previous prime is 872939791. The next prime is 872939797. The reversal of 872939793 is 397939278.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 872939793 - 21 = 872939791 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (872939791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13226328 + ... + 13226393.

It is an arithmetic number, because the mean of its divisors is an integer number (158716332).

Almost surely, 2872939793 is an apocalyptic number.

It is an amenable number.

872939793 is a deficient number, since it is larger than the sum of its proper divisors (396790863).

872939793 is a wasteful number, since it uses less digits than its factorization.

872939793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26452735.

The product of its digits is 5143824, while the sum is 57.

The square root of 872939793 is about 29545.5545387119. The cubic root of 872939793 is about 955.7143282719.

The spelling of 872939793 in words is "eight hundred seventy-two million, nine hundred thirty-nine thousand, seven hundred ninety-three".

Divisors: 1 3 11 33 26452721 79358163 290979931 872939793