21942296 has 32 divisors (see below), whose sum is σ = 42931200. Its totient is φ = 10501920.

The previous prime is 21942289. The next prime is 21942313. The reversal of 21942296 is 69224912.

It is a congruent number.

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, 25115 + ... + 25973.

It is an arithmetic number, because the mean of its divisors is an integer number (1341600).

Almost surely, 2^21942296 is an apocalyptic number.

It is an amenable number.

21942296 is a deficient number, since it is larger than the sum of its proper divisors (20988904).

21942296 is a wasteful number, since it uses less digits than its factorization.

21942296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999 (or 995 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 21942296 is about 4684.2604539030. The cubic root of 21942296 is about 279.9587354156.

The spelling of 21942296 in words is "twenty-one million, nine hundred forty-two thousand, two hundred ninety-six".