21367496 has 16 divisors (see below), whose sum is σ = 40381440. Its totient is φ = 10599120.

The previous prime is 21367481. The next prime is 21367501. The reversal of 21367496 is 69476312.

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, 9500 + ... + 11531.

It is an arithmetic number, because the mean of its divisors is an integer number (2523840).

Almost surely, 2^21367496 is an apocalyptic number.

It is an amenable number.

21367496 is a deficient number, since it is larger than the sum of its proper divisors (19013944).

21367496 is a wasteful number, since it uses less digits than its factorization.

21367496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21164 (or 21160 counting only the distinct ones).

The product of its digits is 54432, while the sum is 38.

The square root of 21367496 is about 4622.4988912925. The cubic root of 21367496 is about 277.4924749738.

The spelling of 21367496 in words is "twenty-one million, three hundred sixty-seven thousand, four hundred ninety-six".