20712375 has 96 divisors (see below), whose sum is σ = 42793920. Its totient is φ = 9849600.

The previous prime is 20712353. The next prime is 20712403. The reversal of 20712375 is 57321702.

It is not a de Polignac number, because 20712375 - 2⁵ = 20712343 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1090116 + ... + 1090134.

It is an arithmetic number, because the mean of its divisors is an integer number (445770).

Almost surely, 2^20712375 is an apocalyptic number.

20712375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20712375 is an abundant number, since it is smaller than the sum of its proper divisors (22081545).

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

20712375 is a wasteful number, since it uses less digits than its factorization.

20712375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 20712375 is about 4551.0850354613. The cubic root of 20712375 is about 274.6270426300.

The spelling of 20712375 in words is "twenty million, seven hundred twelve thousand, three hundred seventy-five".