22715 has 16 divisors (see below), whose sum is σ = 34560. Its totient is φ = 13920.

The previous prime is 22709. The next prime is 22717. The reversal of 22715 is 51722.

22715 = T₃₄ + T₃₅ + ... + T₅₅.

22715 = 21² + 22² + ... + 42².

It is not a de Polignac number, because 22715 - 2⁴ = 22699 is a prime.

It is a plaindrome in base 12 and base 16.

It is a junction number, because it is equal to n+sod(n) for n = 22693 and 22702.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 22715.

It is not an unprimeable number, because it can be changed into a prime (22717) 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, 356 + ... + 414.

It is an arithmetic number, because the mean of its divisors is an integer number (2160).

2²²⁷¹⁵ is an apocalyptic number.

22715 is a deficient number, since it is larger than the sum of its proper divisors (11845).

22715 is a wasteful number, since it uses less digits than its factorization.

22715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82.

The product of its digits is 140, while the sum is 17.

The square root of 22715 is about 150.7149627608. The cubic root of 22715 is about 28.3207171821.

It can be divided in two parts, 227 and 15, that added together give a palindrome (242).

The spelling of 22715 in words is "twenty-two thousand, seven hundred fifteen".