20070972 has 36 divisors (see below), whose sum is σ = 50909040. Its totient is φ = 6667392.

The previous prime is 20070971. The next prime is 20070979. The reversal of 20070972 is 27907002.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20070971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12148 + ... + 13700.

It is an arithmetic number, because the mean of its divisors is an integer number (1414140).

Almost surely, 2^20070972 is an apocalyptic number.

It is an amenable number.

20070972 is an abundant number, since it is smaller than the sum of its proper divisors (30838068).

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

20070972 is a wasteful number, since it uses less digits than its factorization.

20070972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922 (or 1917 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 20070972 is about 4480.0638388309. The cubic root of 20070972 is about 271.7624620241.

Adding to 20070972 its reverse (27907002), we get a palindrome (47977974).

The spelling of 20070972 in words is "twenty million, seventy thousand, nine hundred seventy-two".