20923152 has 40 divisors (see below), whose sum is σ = 55919040. Its totient is φ = 6733440.

The previous prime is 20923151. The next prime is 20923157. The reversal of 20923152 is 25132902.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20923151) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6124 + ... + 8907.

It is an arithmetic number, because the mean of its divisors is an integer number (1397976).

Almost surely, 2^20923152 is an apocalyptic number.

It is an amenable number.

20923152 is an abundant number, since it is smaller than the sum of its proper divisors (34995888).

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

20923152 is a wasteful number, since it uses less digits than its factorization.

20923152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15071 (or 15065 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 20923152 is about 4574.1832057756. The cubic root of 20923152 is about 275.5554700929. Note that the first 3 decimals are identical.

The spelling of 20923152 in words is "twenty million, nine hundred twenty-three thousand, one hundred fifty-two".