21952466 has 8 divisors (see below), whose sum is σ = 33731964. Its totient is φ = 10708480.

The previous prime is 21952459. The next prime is 21952477. The reversal of 21952466 is 66425912.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16168441 + 5784025 = 4021^2 + 2405^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 133775 + ... + 133938.

Almost surely, 2^21952466 is an apocalyptic number.

21952466 is a deficient number, since it is larger than the sum of its proper divisors (11779498).

21952466 is a wasteful number, since it uses less digits than its factorization.

21952466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267756.

The product of its digits is 25920, while the sum is 35.

The square root of 21952466 is about 4685.3458783744. The cubic root of 21952466 is about 280.0019812785.

The spelling of 21952466 in words is "twenty-one million, nine hundred fifty-two thousand, four hundred sixty-six".