22142646 has 28 divisors (see below), whose sum is σ = 49801452. Its totient is φ = 7380396.

The previous prime is 22142621. The next prime is 22142647. The reversal of 22142646 is 64624122.

22142646 is a `hidden beast` number, since 2 + 2 + 14 + 2 + 646 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22142647) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 6136 + ... + 9051.

Almost surely, 2^22142646 is an apocalyptic number.

22142646 is an abundant number, since it is smaller than the sum of its proper divisors (27658806).

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

22142646 is an equidigital number, since it uses as much as digits as its factorization.

22142646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15207 (or 15192 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 22142646 is about 4705.5973053375. The cubic root of 22142646 is about 280.8082344725.

Adding to 22142646 its reverse (64624122), we get a palindrome (86766768).

The spelling of 22142646 in words is "twenty-two million, one hundred forty-two thousand, six hundred forty-six".