28631353104 has 30 divisors (see below), whose sum is σ = 80128023326. Its totient is φ = 9543784320.

The previous prime is 28631353031. The next prime is 28631353117. The reversal of 28631353104 is 40135313682.

28631353104 is a `hidden beast` number, since 2 + 8 + 631 + 3 + 5 + 3 + 10 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21534975504 + 7096377600 = 146748^2 + 84240^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99414277 + ... + 99414564.

Almost surely, 2^28631353104 is an apocalyptic number.

28631353104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28631353104 is an abundant number, since it is smaller than the sum of its proper divisors (51496670222).

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

28631353104 is a wasteful number, since it uses less digits than its factorization.

28631353104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198828855 (or 198828846 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 28631353104 its reverse (40135313682), we get a palindrome (68766666786).

The spelling of 28631353104 in words is "twenty-eight billion, six hundred thirty-one million, three hundred fifty-three thousand, one hundred four".