22618442 has 32 divisors (see below), whose sum is σ = 42574464. Its totient is φ = 8755200.

The previous prime is 22618423. The next prime is 22618451. The reversal of 22618442 is 24481622.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29342 + ... + 30102.

It is an arithmetic number, because the mean of its divisors is an integer number (1330452).

Almost surely, 2^22618442 is an apocalyptic number.

22618442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22618442 is a deficient number, since it is larger than the sum of its proper divisors (19956022).

22618442 is a wasteful number, since it uses less digits than its factorization.

22618442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974.

The product of its digits is 6144, while the sum is 29.

The square root of 22618442 is about 4755.8849859937. The cubic root of 22618442 is about 282.8053117044.

It can be divided in two parts, 22618 and 442, that multiplied together give a triangular number (9997156 = T₄₄₇₁).

The spelling of 22618442 in words is "twenty-two million, six hundred eighteen thousand, four hundred forty-two".