28421444458 has 32 divisors (see below), whose sum is σ = 49281706368. Its totient is φ = 12149491200.

The previous prime is 28421444449. The next prime is 28421444531. The reversal of 28421444458 is 85444412482.

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, 465291 + ... + 522817.

It is an arithmetic number, because the mean of its divisors is an integer number (1540053324).

Almost surely, 2^28421444458 is an apocalyptic number.

28421444458 is a deficient number, since it is larger than the sum of its proper divisors (20860261910).

28421444458 is a wasteful number, since it uses less digits than its factorization.

28421444458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58878.

The product of its digits is 1310720, while the sum is 46.

The spelling of 28421444458 in words is "twenty-eight billion, four hundred twenty-one million, four hundred forty-four thousand, four hundred fifty-eight".