21314756 has 12 divisors (see below), whose sum is σ = 38168592. Its totient is φ = 10409448.

The previous prime is 21314749. The next prime is 21314771. The reversal of 21314756 is 65741312.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

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, 61790 + ... + 62133.

It is an arithmetic number, because the mean of its divisors is an integer number (3180716).

Almost surely, 2^21314756 is an apocalyptic number.

It is an amenable number.

21314756 is a deficient number, since it is larger than the sum of its proper divisors (16853836).

21314756 is a wasteful number, since it uses less digits than its factorization.

21314756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123970 (or 123968 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 21314756 is about 4616.7906601881. The cubic root of 21314756 is about 277.2639813387.

The spelling of 21314756 in words is "twenty-one million, three hundred fourteen thousand, seven hundred fifty-six".