21962472 has 32 divisors (see below), whose sum is σ = 62750400. Its totient is φ = 6274944.

The previous prime is 21962471. The next prime is 21962513. The reversal of 21962472 is 27426912.

It is not an unprimeable number, because it can be changed into a prime (21962471) 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, 65197 + ... + 65532.

It is an arithmetic number, because the mean of its divisors is an integer number (1960950).

Almost surely, 2^21962472 is an apocalyptic number.

It is an amenable number.

21962472 is an abundant number, since it is smaller than the sum of its proper divisors (40787928).

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

21962472 is a wasteful number, since it uses less digits than its factorization.

21962472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130745 (or 130741 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 21962472 is about 4686.4135540944. The cubic root of 21962472 is about 280.0445167315.

The spelling of 21962472 in words is "twenty-one million, nine hundred sixty-two thousand, four hundred seventy-two".