21714996 has 12 divisors (see below), whose sum is σ = 50668352. Its totient is φ = 7238328.

The previous prime is 21714989. The next prime is 21715003. The reversal of 21714996 is 69941712.

It is an interprime number because it is at equal distance from previous prime (21714989) and next prime (21715003).

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 904780 + ... + 904803.

Almost surely, 2^21714996 is an apocalyptic number.

It is an amenable number.

21714996 is an abundant number, since it is smaller than the sum of its proper divisors (28953356).

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

21714996 is a wasteful number, since it uses less digits than its factorization.

21714996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809590 (or 1809588 counting only the distinct ones).

The product of its digits is 27216, while the sum is 39.

The square root of 21714996 is about 4659.9351926824. The cubic root of 21714996 is about 278.9886815979.

The spelling of 21714996 in words is "twenty-one million, seven hundred fourteen thousand, nine hundred ninety-six".