20925432 has 64 divisors (see below), whose sum is σ = 63417600. Its totient is φ = 6340320.

The previous prime is 20925389. The next prime is 20925433. The reversal of 20925432 is 23452902.

20925432 is a `hidden beast` number, since 209 + 25 + 432 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20925396 and 20925405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20925433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2028 + ... + 6779.

It is an arithmetic number, because the mean of its divisors is an integer number (990900).

Almost surely, 2^20925432 is an apocalyptic number.

20925432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20925432 is an abundant number, since it is smaller than the sum of its proper divisors (42492168).

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

20925432 is a wasteful number, since it uses less digits than its factorization.

20925432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8833 (or 8823 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 20925432 is about 4574.4324238095. The cubic root of 20925432 is about 275.5654788406.

The spelling of 20925432 in words is "twenty million, nine hundred twenty-five thousand, four hundred thirty-two".