21914976 has 24 divisors (see below), whose sum is σ = 57527064. Its totient is φ = 7304960.

The previous prime is 21914969. The next prime is 21914983. The reversal of 21914976 is 67941912.

It is an interprime number because it is at equal distance from previous prime (21914969) and next prime (21914983).

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114045 + ... + 114236.

It is an arithmetic number, because the mean of its divisors is an integer number (2396961).

Almost surely, 2^21914976 is an apocalyptic number.

It is an amenable number.

21914976 is an abundant number, since it is smaller than the sum of its proper divisors (35612088).

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

21914976 is a wasteful number, since it uses less digits than its factorization.

21914976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228294 (or 228286 counting only the distinct ones).

The product of its digits is 27216, while the sum is 39.

The square root of 21914976 is about 4681.3433969321. The cubic root of 21914976 is about 279.8424964529.

The spelling of 21914976 in words is "twenty-one million, nine hundred fourteen thousand, nine hundred seventy-six".