20089472 has 32 divisors (see below), whose sum is σ = 43104180. Its totient is φ = 9271296.

The previous prime is 20089451. The next prime is 20089477. The reversal of 20089472 is 27498002.

It can be written as a sum of positive squares in 2 ways, for example, as 15178816 + 4910656 = 3896^2 + 2216^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (20089477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4373 + ... + 7700.

Almost surely, 2^20089472 is an apocalyptic number.

It is an amenable number.

20089472 is an abundant number, since it is smaller than the sum of its proper divisors (23014708).

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

20089472 is a wasteful number, since it uses less digits than its factorization.

20089472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12100 (or 12088 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 20089472 is about 4482.1280659972. The cubic root of 20089472 is about 271.8459335112.

The spelling of 20089472 in words is "twenty million, eighty-nine thousand, four hundred seventy-two".