21614968 has 8 divisors (see below), whose sum is σ = 40528080. Its totient is φ = 10807480.

The previous prime is 21614959. The next prime is 21614981. The reversal of 21614968 is 86941612.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1350928 + ... + 1350943.

It is an arithmetic number, because the mean of its divisors is an integer number (5066010).

Almost surely, 2^21614968 is an apocalyptic number.

It is an amenable number.

21614968 is a deficient number, since it is larger than the sum of its proper divisors (18913112).

21614968 is a wasteful number, since it uses less digits than its factorization.

21614968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2701877 (or 2701873 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 21614968 is about 4649.1900369849. The cubic root of 21614968 is about 278.5596441463.

The spelling of 21614968 in words is "twenty-one million, six hundred fourteen thousand, nine hundred sixty-eight".