20207572 has 24 divisors (see below), whose sum is σ = 44089920. Its totient is φ = 7872960.

The previous prime is 20207563. The next prime is 20207581. The reversal of 20207572 is 27570202.

It is an interprime number because it is at equal distance from previous prime (20207563) and next prime (20207581).

It is a super-2 number, since 2×20207572² = 816691932270368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32497 + ... + 33112.

It is an arithmetic number, because the mean of its divisors is an integer number (1837080).

Almost surely, 2^20207572 is an apocalyptic number.

20207572 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20207572 is an abundant number, since it is smaller than the sum of its proper divisors (23882348).

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

20207572 is a wasteful number, since it uses less digits than its factorization.

20207572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65631 (or 65629 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 20207572 is about 4495.2833058663. The cubic root of 20207572 is about 272.3775933694.

Adding to 20207572 its reverse (27570202), we get a palindrome (47777774).

The spelling of 20207572 in words is "twenty million, two hundred seven thousand, five hundred seventy-two".