20288130 has 32 divisors (see below), whose sum is σ = 48816000. Its totient is φ = 5396352.

The previous prime is 20288129. The next prime is 20288141. The reversal of 20288130 is 3188202.

It is a self number, because there is not a number n which added to its sum of digits gives 20288130.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17406 + ... + 18534.

It is an arithmetic number, because the mean of its divisors is an integer number (1525500).

Almost surely, 2^20288130 is an apocalyptic number.

20288130 is an abundant number, since it is smaller than the sum of its proper divisors (28527870).

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

20288130 is a wasteful number, since it uses less digits than its factorization.

20288130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 20288130 is about 4504.2346741705. The cubic root of 20288130 is about 272.7390601976.

The spelling of 20288130 in words is "twenty million, two hundred eighty-eight thousand, one hundred thirty".