28551408700 has 18 divisors (see below), whose sum is σ = 61956557096. Its totient is φ = 11420563440.

The previous prime is 28551408689. The next prime is 28551408701. The reversal of 28551408700 is 780415582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28551408701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142756944 + ... + 142757143.

Almost surely, 2^28551408700 is an apocalyptic number.

28551408700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28551408700 is an abundant number, since it is smaller than the sum of its proper divisors (33405148396).

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

28551408700 is a wasteful number, since it uses less digits than its factorization.

28551408700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285514101 (or 285514094 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 40.

The spelling of 28551408700 in words is "twenty-eight billion, five hundred fifty-one million, four hundred eight thousand, seven hundred".