22440642 has 16 divisors (see below), whose sum is σ = 51292992. Its totient is φ = 6411600.

The previous prime is 22440641. The next prime is 22440643. The reversal of 22440642 is 24604422.

It is an interprime number because it is at equal distance from previous prime (22440641) and next prime (22440643).

It is not an unprimeable number, because it can be changed into a prime (22440641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267109 + ... + 267192.

It is an arithmetic number, because the mean of its divisors is an integer number (3205812).

Almost surely, 2^22440642 is an apocalyptic number.

22440642 is an abundant number, since it is smaller than the sum of its proper divisors (28852350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22440642 is a wasteful number, since it uses less digits than its factorization.

22440642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534313.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 22440642 is about 4737.1554755993. The cubic root of 22440642 is about 282.0623321798.

The spelling of 22440642 in words is "twenty-two million, four hundred forty thousand, six hundred forty-two".