28317734464 has 14 divisors (see below), whose sum is σ = 56193004454. Its totient is φ = 14158867200.

The previous prime is 28317734443. The next prime is 28317734503. The reversal of 28317734464 is 46443771382.

It can be written as a sum of positive squares in only one way, i.e., 20782105600 + 7535628864 = 144160^2 + 86808^2 .

It is a super-2 number, since 2×28317734464² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221232237 + ... + 221232364.

Almost surely, 2^28317734464 is an apocalyptic number.

It is an amenable number.

28317734464 is a deficient number, since it is larger than the sum of its proper divisors (27875269990).

28317734464 is an equidigital number, since it uses as much as digits as its factorization.

28317734464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442464613 (or 442464603 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 49.

The spelling of 28317734464 in words is "twenty-eight billion, three hundred seventeen million, seven hundred thirty-four thousand, four hundred sixty-four".