21946792 has 16 divisors (see below), whose sum is σ = 47028960. Its totient is φ = 9405744.

The previous prime is 21946787. The next prime is 21946817. The reversal of 21946792 is 29764912.

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, 195898 + ... + 196009.

It is an arithmetic number, because the mean of its divisors is an integer number (2939310).

Almost surely, 2^21946792 is an apocalyptic number.

It is an amenable number.

21946792 is an abundant number, since it is smaller than the sum of its proper divisors (25082168).

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

21946792 is a wasteful number, since it uses less digits than its factorization.

21946792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391920 (or 391916 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 21946792 is about 4684.7403343195. The cubic root of 21946792 is about 279.9778553915.

The spelling of 21946792 in words is "twenty-one million, nine hundred forty-six thousand, seven hundred ninety-two".