20137328 has 20 divisors (see below), whose sum is σ = 40713168. Its totient is φ = 9630720.

The previous prime is 20137309. The next prime is 20137331. The reversal of 20137328 is 82373102.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20137297 and 20137306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26993 + ... + 27728.

Almost surely, 2^20137328 is an apocalyptic number.

It is an amenable number.

20137328 is an abundant number, since it is smaller than the sum of its proper divisors (20575840).

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

20137328 is a wasteful number, since it uses less digits than its factorization.

20137328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54752 (or 54746 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 20137328 is about 4487.4634260348. The cubic root of 20137328 is about 272.0616209869.

The spelling of 20137328 in words is "twenty million, one hundred thirty-seven thousand, three hundred twenty-eight".