28900030311 has 32 divisors (see below), whose sum is σ = 47304414720. Its totient is φ = 17344939392.

The previous prime is 28900030309. The next prime is 28900030319. The reversal of 28900030311 is 11303000982.

It is not a de Polignac number, because 28900030311 - 2¹ = 28900030309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28900030319) 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, 1358205 + ... + 1379318.

It is an arithmetic number, because the mean of its divisors is an integer number (1478262960).

Almost surely, 2^28900030311 is an apocalyptic number.

28900030311 is a deficient number, since it is larger than the sum of its proper divisors (18404384409).

28900030311 is a wasteful number, since it uses less digits than its factorization.

28900030311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737572 (or 2737566 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 28900030311 in words is "twenty-eight billion, nine hundred million, thirty thousand, three hundred eleven".