20411972 has 24 divisors (see below), whose sum is σ = 41287680. Its totient is φ = 8648640.

The previous prime is 20411953. The next prime is 20411983. The reversal of 20411972 is 27911402.

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, 1604 + ... + 6587.

It is an arithmetic number, because the mean of its divisors is an integer number (1720320).

Almost surely, 2^20411972 is an apocalyptic number.

It is an amenable number.

20411972 is an abundant number, since it is smaller than the sum of its proper divisors (20875708).

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

20411972 is a wasteful number, since it uses less digits than its factorization.

20411972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8291 (or 8289 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 20411972 is about 4517.9610445421. The cubic root of 20411972 is about 273.2928825062.

The spelling of 20411972 in words is "twenty million, four hundred eleven thousand, nine hundred seventy-two".