21410368 has 28 divisors (see below), whose sum is σ = 48556672. Its totient is φ = 9175680.

The previous prime is 21410353. The next prime is 21410371. The reversal of 21410368 is 86301412.

It is a tau number, because it is divible by the number of its divisors (28).

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, 23448 + ... + 24343.

Almost surely, 2^21410368 is an apocalyptic number.

21410368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21410368 is an abundant number, since it is smaller than the sum of its proper divisors (27146304).

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

21410368 is an equidigital number, since it uses as much as digits as its factorization.

21410368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47810 (or 47800 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 21410368 is about 4627.1338861114. The cubic root of 21410368 is about 277.6779390655.

The spelling of 21410368 in words is "twenty-one million, four hundred ten thousand, three hundred sixty-eight".