22642152 has 64 divisors (see below), whose sum is σ = 62952960. Its totient is φ = 6739200.

The previous prime is 22642141. The next prime is 22642153. The reversal of 22642152 is 25124622.

It is a happy number.

It is a super-2 number, since 2×22642152² = 1025334094382208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (22642153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8502 + ... + 10842.

It is an arithmetic number, because the mean of its divisors is an integer number (983640).

Almost surely, 2^22642152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22642152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31476480).

22642152 is an abundant number, since it is smaller than the sum of its proper divisors (40310808).

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

22642152 is a wasteful number, since it uses less digits than its factorization.

22642152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394 (or 2390 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 22642152 is about 4758.3770342418. The cubic root of 22642152 is about 282.9040949942.

Adding to 22642152 its reverse (25124622), we get a palindrome (47766774).

The spelling of 22642152 in words is "twenty-two million, six hundred forty-two thousand, one hundred fifty-two".