21548796 has 12 divisors (see below), whose sum is σ = 50280552. Its totient is φ = 7182928.

The previous prime is 21548777. The next prime is 21548819. The reversal of 21548796 is 69784512.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 897855 + ... + 897878.

It is an arithmetic number, because the mean of its divisors is an integer number (4190046).

Almost surely, 2^21548796 is an apocalyptic number.

It is an amenable number.

21548796 is an abundant number, since it is smaller than the sum of its proper divisors (28731756).

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

21548796 is a wasteful number, since it uses less digits than its factorization.

21548796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795740 (or 1795738 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 21548796 is about 4642.0680736068. The cubic root of 21548796 is about 278.2750930130.

The spelling of 21548796 in words is "twenty-one million, five hundred forty-eight thousand, seven hundred ninety-six".