22502722 has 16 divisors (see below), whose sum is σ = 36903744. Its totient is φ = 10206000.

The previous prime is 22502681. The next prime is 22502729. The reversal of 22502722 is 22720522.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 22502693 and 22502702.

It is not an unprimeable number, because it can be changed into a prime (22502729) 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, 13072 + ... + 14692.

It is an arithmetic number, because the mean of its divisors is an integer number (2306484).

Almost surely, 2^22502722 is an apocalyptic number.

22502722 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22502722 is a deficient number, since it is larger than the sum of its proper divisors (14401022).

22502722 is a wasteful number, since it uses less digits than its factorization.

22502722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 22502722 is about 4743.7034055683. The cubic root of 22502722 is about 282.3221926500.

It can be divided in two parts, 225027 and 22, that multiplied together give a palindrome (4950594).

The spelling of 22502722 in words is "twenty-two million, five hundred two thousand, seven hundred twenty-two".