21395696 has 20 divisors (see below), whose sum is σ = 47376432. Its totient is φ = 9169536.

The previous prime is 21395677. The next prime is 21395723. The reversal of 21395696 is 69659312.

It is a super-3 number, since 3×21395696³ (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, 95405 + ... + 95628.

Almost surely, 2^21395696 is an apocalyptic number.

It is an amenable number.

21395696 is an abundant number, since it is smaller than the sum of its proper divisors (25980736).

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

21395696 is a wasteful number, since it uses less digits than its factorization.

21395696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191048 (or 191042 counting only the distinct ones).

The product of its digits is 87480, while the sum is 41.

The square root of 21395696 is about 4625.5481837291. The cubic root of 21395696 is about 277.6144959445.

The spelling of 21395696 in words is "twenty-one million, three hundred ninety-five thousand, six hundred ninety-six".