20442532 has 12 divisors (see below), whose sum is σ = 39026736. Its totient is φ = 9292040.

The previous prime is 20442523. The next prime is 20442557. The reversal of 20442532 is 23524402.

It is a super-2 number, since 2×20442532² = 835794229142048, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232258 + ... + 232345.

It is an arithmetic number, because the mean of its divisors is an integer number (3252228).

Almost surely, 2^20442532 is an apocalyptic number.

20442532 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20442532 is a deficient number, since it is larger than the sum of its proper divisors (18584204).

20442532 is a wasteful number, since it uses less digits than its factorization.

20442532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464618 (or 464616 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 20442532 is about 4521.3418362252. The cubic root of 20442532 is about 273.4292022755.

Adding to 20442532 its reverse (23524402), we get a palindrome (43966934).

The spelling of 20442532 in words is "twenty million, four hundred forty-two thousand, five hundred thirty-two".