28690538030 has 32 divisors (see below), whose sum is σ = 64386040320. Its totient is φ = 8942505120.

The previous prime is 28690538021. The next prime is 28690538047. The reversal of 28690538030 is 3083509682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18629450 + ... + 18630989.

It is an arithmetic number, because the mean of its divisors is an integer number (2012063760).

Almost surely, 2^28690538030 is an apocalyptic number.

28690538030 is an abundant number, since it is smaller than the sum of its proper divisors (35695502290).

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

28690538030 is a wasteful number, since it uses less digits than its factorization.

28690538030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37260464.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 28690538030 in words is "twenty-eight billion, six hundred ninety million, five hundred thirty-eight thousand, thirty".