21496608 has 72 divisors (see below), whose sum is σ = 69870528. Its totient is φ = 6141312.

The previous prime is 21496589. The next prime is 21496613. The reversal of 21496608 is 80669412.

21496608 is a `hidden beast` number, since 2 + 1 + 49 + 6 + 608 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3316 + ... + 7347.

It is an arithmetic number, because the mean of its divisors is an integer number (970424).

Almost surely, 2^21496608 is an apocalyptic number.

21496608 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21496608 is an abundant number, since it is smaller than the sum of its proper divisors (48373920).

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

21496608 is a wasteful number, since it uses less digits than its factorization.

21496608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10686 (or 10675 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 21496608 is about 4636.4434645534. The cubic root of 21496608 is about 278.0502643616.

The spelling of 21496608 in words is "twenty-one million, four hundred ninety-six thousand, six hundred eight".