28477893660738 has 32 divisors (see below), whose sum is σ = 57166214692032. Its totient is φ = 9457569139200.

The previous prime is 28477893660703. The next prime is 28477893660743. The reversal of 28477893660738 is 83706639877482.

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, 11355370 + ... + 13634522.

It is an arithmetic number, because the mean of its divisors is an integer number (1786444209126).

Almost surely, 2^{28477893660738} is an apocalyptic number.

28477893660738 is an abundant number, since it is smaller than the sum of its proper divisors (28688321031294).

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

28477893660738 is a wasteful number, since it uses less digits than its factorization.

28477893660738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2286850.

The product of its (nonzero) digits is 4096770048, while the sum is 78.

The spelling of 28477893660738 in words is "twenty-eight trillion, four hundred seventy-seven billion, eight hundred ninety-three million, six hundred sixty thousand, seven hundred thirty-eight".