21942696 has 16 divisors (see below), whose sum is σ = 54856800. Its totient is φ = 7314224.

The previous prime is 21942673. The next prime is 21942703. The reversal of 21942696 is 69624912.

It is a super-3 number, since 3×21942696³ (a number of 23 digits) contains 333 as substring.

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, 457116 + ... + 457163.

It is an arithmetic number, because the mean of its divisors is an integer number (3428550).

Almost surely, 2^21942696 is an apocalyptic number.

It is an amenable number.

21942696 is an abundant number, since it is smaller than the sum of its proper divisors (32914104).

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

21942696 is a wasteful number, since it uses less digits than its factorization.

21942696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914288 (or 914284 counting only the distinct ones).

The product of its digits is 46656, while the sum is 39.

The square root of 21942696 is about 4684.3031498826. The cubic root of 21942696 is about 279.9604365869.

The spelling of 21942696 in words is "twenty-one million, nine hundred forty-two thousand, six hundred ninety-six".