28488684400 has 60 divisors (see below), whose sum is σ = 74666263464. Its totient is φ = 10359520000.

The previous prime is 28488684397. The next prime is 28488684437. The reversal of 28488684400 is 448688482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3232951 + ... + 3241750.

Almost surely, 2^28488684400 is an apocalyptic number.

28488684400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28488684400 is an abundant number, since it is smaller than the sum of its proper divisors (46177579064).

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

28488684400 is a wasteful number, since it uses less digits than its factorization.

28488684400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6474730 (or 6474719 counting only the distinct ones).

The product of its (nonzero) digits is 3145728, while the sum is 52.

The spelling of 28488684400 in words is "twenty-eight billion, four hundred eighty-eight million, six hundred eighty-four thousand, four hundred".