21914712 has 48 divisors (see below), whose sum is σ = 61556040. Its totient is φ = 7304256.

The previous prime is 21914707. The next prime is 21914713. The reversal of 21914712 is 21741912.

21914712 is a `hidden beast` number, since 2 + 191 + 471 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21914713) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3693 + ... + 7580.

Almost surely, 2^21914712 is an apocalyptic number.

It is an amenable number.

21914712 is an abundant number, since it is smaller than the sum of its proper divisors (39641328).

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

21914712 is a wasteful number, since it uses less digits than its factorization.

21914712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11294 (or 11278 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 21914712 is about 4681.3151998130. The cubic root of 21914712 is about 279.8413727355.

It can be divided in two parts, 2191 and 4712, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 21914712 in words is "twenty-one million, nine hundred fourteen thousand, seven hundred twelve".