20152072 has 32 divisors (see below), whose sum is σ = 40590720. Its totient is φ = 9345280.

The previous prime is 20152063. The next prime is 20152073. The reversal of 20152072 is 27025102.

It is a super-2 number, since 2×20152072² = 812212011786368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20152073) by changing a digit.

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, 8613 + ... + 10699.

It is an arithmetic number, because the mean of its divisors is an integer number (1268460).

Almost surely, 2^20152072 is an apocalyptic number.

It is an amenable number.

20152072 is an abundant number, since it is smaller than the sum of its proper divisors (20438648).

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

20152072 is a wasteful number, since it uses less digits than its factorization.

20152072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181 (or 2177 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 20152072 is about 4489.1059243462. The cubic root of 20152072 is about 272.1280034775.

Adding to 20152072 its reverse (27025102), we get a palindrome (47177174).

The spelling of 20152072 in words is "twenty million, one hundred fifty-two thousand, seventy-two".