28456700831 has 8 divisors (see below), whose sum is σ = 30682656480. Its totient is φ = 26236027872.

The previous prime is 28456700819. The next prime is 28456700861. The reversal of 28456700831 is 13800765482.

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 28456700831 - 2¹⁰ = 28456699807 is a prime.

It is a super-2 number, since 2×28456700831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28456700861) 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, 1309475 + ... + 1331028.

It is an arithmetic number, because the mean of its divisors is an integer number (3835332060).

Almost surely, 2^28456700831 is an apocalyptic number.

28456700831 is a deficient number, since it is larger than the sum of its proper divisors (2225955649).

28456700831 is a wasteful number, since it uses less digits than its factorization.

28456700831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2641345.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 28456700831 in words is "twenty-eight billion, four hundred fifty-six million, seven hundred thousand, eight hundred thirty-one".