20087400 has 48 divisors (see below), whose sum is σ = 62272800. Its totient is φ = 5356480.

The previous prime is 20087399. The next prime is 20087413. The reversal of 20087400 is 478002.

It is a happy 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, 16140 + ... + 17339.

It is an arithmetic number, because the mean of its divisors is an integer number (1297350).

Almost surely, 2^20087400 is an apocalyptic number.

20087400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20087400 is an abundant number, since it is smaller than the sum of its proper divisors (42185400).

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

20087400 is a wasteful number, since it uses less digits than its factorization.

20087400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33498 (or 33489 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 20087400 is about 4481.8969198320. The cubic root of 20087400 is about 271.8365872537.

The spelling of 20087400 in words is "twenty million, eighty-seven thousand, four hundred".