20713475 has 12 divisors (see below), whose sum is σ = 25761744. Its totient is φ = 16521120.

The previous prime is 20713457. The next prime is 20713489. The reversal of 20713475 is 57431702.

It is not a de Polignac number, because 20713475 - 2⁶ = 20713411 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8882 + ... + 10968.

It is an arithmetic number, because the mean of its divisors is an integer number (2146812).

Almost surely, 2^20713475 is an apocalyptic number.

20713475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20713475 is a deficient number, since it is larger than the sum of its proper divisors (5048269).

20713475 is a wasteful number, since it uses less digits than its factorization.

20713475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494 (or 2489 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 20713475 is about 4551.2058841586. The cubic root of 20713475 is about 274.6319042067.

The spelling of 20713475 in words is "twenty million, seven hundred thirteen thousand, four hundred seventy-five".