20716375 has 24 divisors (see below), whose sum is σ = 26797680. Its totient is φ = 15984800.

The previous prime is 20716373. The next prime is 20716379. The reversal of 20716375 is 57361702.

It is not a de Polignac number, because 20716375 - 2¹ = 20716373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20716373) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 351096 + ... + 351154.

It is an arithmetic number, because the mean of its divisors is an integer number (1116570).

Almost surely, 2^20716375 is an apocalyptic number.

20716375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20716375 is a deficient number, since it is larger than the sum of its proper divisors (6081305).

20716375 is an frugal number, since it uses more digits than its factorization.

20716375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 20716375 is about 4551.5244698892. The cubic root of 20716375 is about 274.6447202658.

The spelling of 20716375 in words is "twenty million, seven hundred sixteen thousand, three hundred seventy-five".