22715506 has 16 divisors (see below), whose sum is σ = 37542528. Its totient is φ = 10222000.

The previous prime is 22715503. The next prime is 22715509. The reversal of 22715506 is 60551722.

It is an interprime number because it is at equal distance from previous prime (22715503) and next prime (22715509).

It is not an unprimeable number, because it can be changed into a prime (22715503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2890 + ... + 7333.

It is an arithmetic number, because the mean of its divisors is an integer number (2346408).

Almost surely, 2^22715506 is an apocalyptic number.

22715506 is a deficient number, since it is larger than the sum of its proper divisors (14827022).

22715506 is a wasteful number, since it uses less digits than its factorization.

22715506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10337.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 22715506 is about 4766.0786816837. The cubic root of 22715506 is about 283.2092747157.

It can be divided in two parts, 2271 and 5506, that added together give a palindrome (7777).

The spelling of 22715506 in words is "twenty-two million, seven hundred fifteen thousand, five hundred six".