21952562 has 16 divisors (see below), whose sum is σ = 35056800. Its totient is φ = 10280160.

The previous prime is 21952549. The next prime is 21952571. The reversal of 21952562 is 26525912.

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, 137 + ... + 6627.

It is an arithmetic number, because the mean of its divisors is an integer number (2191050).

Almost surely, 2^21952562 is an apocalyptic number.

21952562 is a deficient number, since it is larger than the sum of its proper divisors (13104238).

21952562 is a wasteful number, since it uses less digits than its factorization.

21952562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6601.

The product of its digits is 10800, while the sum is 32.

The square root of 21952562 is about 4685.3561230711. The cubic root of 21952562 is about 280.0023894354.

The spelling of 21952562 in words is "twenty-one million, nine hundred fifty-two thousand, five hundred sixty-two".