28902459990 has 32 divisors (see below), whose sum is σ = 69370385760. Its totient is φ = 7706824704.

The previous prime is 28902459973. The next prime is 28902460021. The reversal of 28902459990 is 9995420982.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 28902459990.

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, 848406 + ... + 881814.

It is an arithmetic number, because the mean of its divisors is an integer number (2167824555).

Almost surely, 2^28902459990 is an apocalyptic number.

28902459990 is an abundant number, since it is smaller than the sum of its proper divisors (40467925770).

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

28902459990 is a wasteful number, since it uses less digits than its factorization.

28902459990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62256.

The product of its (nonzero) digits is 4199040, while the sum is 57.

The spelling of 28902459990 in words is "twenty-eight billion, nine hundred two million, four hundred fifty-nine thousand, nine hundred ninety".