21874962 has 16 divisors (see below), whose sum is σ = 43948800. Its totient is φ = 7258512.

The previous prime is 21874943. The next prime is 21874991. The reversal of 21874962 is 26947812.

It is a self number, because there is not a number n which added to its sum of digits gives 21874962.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6837 + ... + 9512.

It is an arithmetic number, because the mean of its divisors is an integer number (2746800).

Almost surely, 2^21874962 is an apocalyptic number.

21874962 is an abundant number, since it is smaller than the sum of its proper divisors (22073838).

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

21874962 is a wasteful number, since it uses less digits than its factorization.

21874962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16577.

The product of its digits is 48384, while the sum is 39.

The square root of 21874962 is about 4677.0676710948. The cubic root of 21874962 is about 279.6720735767.

The spelling of 21874962 in words is "twenty-one million, eight hundred seventy-four thousand, nine hundred sixty-two".