20126972 has 12 divisors (see below), whose sum is σ = 35263536. Its totient is φ = 10051680.

The previous prime is 20126933. The next prime is 20126983. The reversal of 20126972 is 27962102.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1697 + ... + 6567.

It is an arithmetic number, because the mean of its divisors is an integer number (2938628).

Almost surely, 2^20126972 is an apocalyptic number.

It is an amenable number.

20126972 is a deficient number, since it is larger than the sum of its proper divisors (15136564).

20126972 is a wasteful number, since it uses less digits than its factorization.

20126972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5908 (or 5906 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 20126972 is about 4486.3093963747. The cubic root of 20126972 is about 272.0149753866.

The spelling of 20126972 in words is "twenty million, one hundred twenty-six thousand, nine hundred seventy-two".