20713167 has 24 divisors (see below), whose sum is σ = 30612816. Its totient is φ = 13493376.

The previous prime is 20713153. The next prime is 20713169. The reversal of 20713167 is 76131702.

It is not a de Polignac number, because 20713167 - 2⁶ = 20713103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20713167.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20713169) 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, 131853 + ... + 132009.

It is an arithmetic number, because the mean of its divisors is an integer number (1275534).

Almost surely, 2^20713167 is an apocalyptic number.

20713167 is a deficient number, since it is larger than the sum of its proper divisors (9899649).

20713167 is a wasteful number, since it uses less digits than its factorization.

20713167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 20713167 is about 4551.1720468468. The cubic root of 20713167 is about 274.6305429826.

Adding to 20713167 its reverse (76131702), we get a palindrome (96844869).

The spelling of 20713167 in words is "twenty million, seven hundred thirteen thousand, one hundred sixty-seven".