20136972 has 24 divisors (see below), whose sum is σ = 47428416. Its totient is φ = 6649168.

The previous prime is 20136971. The next prime is 20136973. The reversal of 20136972 is 27963102.

It is an interprime number because it is at equal distance from previous prime (20136971) and next prime (20136973).

It is not an unprimeable number, because it can be changed into a prime (20136971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6558 + ... + 9125.

It is an arithmetic number, because the mean of its divisors is an integer number (1976184).

Almost surely, 2^20136972 is an apocalyptic number.

It is an amenable number.

20136972 is an abundant number, since it is smaller than the sum of its proper divisors (27291444).

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

20136972 is a wasteful number, since it uses less digits than its factorization.

20136972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15797 (or 15795 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 20136972 is about 4487.4237597980. The cubic root of 20136972 is about 272.0600177536.

It can be divided in two parts, 201 and 36972, that added together give a palindrome (37173).

The spelling of 20136972 in words is "twenty million, one hundred thirty-six thousand, nine hundred seventy-two".