28458511400 has 48 divisors (see below), whose sum is σ = 72181139040. Its totient is φ = 10348548800.

The previous prime is 28458511399. The next prime is 28458511427. The reversal of 28458511400 is 411585482.

It is a super-2 number, since 2×28458511400² (a number of 22 digits) contains 22 as substring.

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, 6465644 + ... + 6470043.

It is an arithmetic number, because the mean of its divisors is an integer number (1503773730).

Almost surely, 2^28458511400 is an apocalyptic number.

28458511400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28458511400 is an abundant number, since it is smaller than the sum of its proper divisors (43722627640).

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

28458511400 is a wasteful number, since it uses less digits than its factorization.

28458511400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12935714 (or 12935705 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 38.

The spelling of 28458511400 in words is "twenty-eight billion, four hundred fifty-eight million, five hundred eleven thousand, four hundred".