28357677231 has 32 divisors (see below), whose sum is σ = 42141442560. Its totient is φ = 16841672064.

The previous prime is 28357677221. The next prime is 28357677239. The reversal of 28357677231 is 13277675382.

It is not a de Polignac number, because 28357677231 - 2⁶ = 28357677167 is a prime.

It is a super-2 number, since 2×28357677231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28357677239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3573390 + ... + 3581316.

It is an arithmetic number, because the mean of its divisors is an integer number (1316920080).

Almost surely, 2^28357677231 is an apocalyptic number.

28357677231 is a deficient number, since it is larger than the sum of its proper divisors (13783765329).

28357677231 is a wasteful number, since it uses less digits than its factorization.

28357677231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11135.

The product of its digits is 2963520, while the sum is 51.

The spelling of 28357677231 in words is "twenty-eight billion, three hundred fifty-seven million, six hundred seventy-seven thousand, two hundred thirty-one".