20573432 has 32 divisors (see below), whose sum is σ = 42260400. Its totient is φ = 9312000.

The previous prime is 20573411. The next prime is 20573453. The reversal of 20573432 is 23437502.

It is an interprime number because it is at equal distance from previous prime (20573411) and next prime (20573453).

It is a super-2 number, since 2×20573432² = 846532208517248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33932 + ... + 34532.

Almost surely, 2^20573432 is an apocalyptic number.

20573432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20573432 is an abundant number, since it is smaller than the sum of its proper divisors (21686968).

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

20573432 is a wasteful number, since it uses less digits than its factorization.

20573432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007 (or 1003 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 26.

The square root of 20573432 is about 4535.7945279741. The cubic root of 20573432 is about 274.0115788880.

It can be divided in two parts, 205 and 73432, that added together give a palindrome (73637).

The spelling of 20573432 in words is "twenty million, five hundred seventy-three thousand, four hundred thirty-two".