21710192 has 20 divisors (see below), whose sum is σ = 48072816. Its totient is φ = 9304320.

The previous prime is 21710177. The next prime is 21710201. The reversal of 21710192 is 29101712.

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, 96809 + ... + 97032.

Almost surely, 2^21710192 is an apocalyptic number.

It is an amenable number.

21710192 is an abundant number, since it is smaller than the sum of its proper divisors (26362624).

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

21710192 is a wasteful number, since it uses less digits than its factorization.

21710192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193856 (or 193850 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 21710192 is about 4659.4197063583. The cubic root of 21710192 is about 278.9681065619.

The spelling of 21710192 in words is "twenty-one million, seven hundred ten thousand, one hundred ninety-two".