21796108 has 24 divisors (see below), whose sum is σ = 41483232. Its totient is φ = 9978624.

The previous prime is 21796067. The next prime is 21796129. The reversal of 21796108 is 80169712.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1816 + ... + 6847.

It is an arithmetic number, because the mean of its divisors is an integer number (1728468).

Almost surely, 2^21796108 is an apocalyptic number.

It is an amenable number.

21796108 is a deficient number, since it is larger than the sum of its proper divisors (19687124).

21796108 is a wasteful number, since it uses less digits than its factorization.

21796108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8721 (or 8719 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 21796108 is about 4668.6302059598. The cubic root of 21796108 is about 279.3356186868.

It can be divided in two parts, 21796 and 108, that added together give a square (21904 = 148²).

The spelling of 21796108 in words is "twenty-one million, seven hundred ninety-six thousand, one hundred eight".