21456114 has 16 divisors (see below), whose sum is σ = 44392320. Its totient is φ = 6905360.

The previous prime is 21456107. The next prime is 21456131. The reversal of 21456114 is 41165412.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61482 + ... + 61829.

It is an arithmetic number, because the mean of its divisors is an integer number (2774520).

Almost surely, 2^21456114 is an apocalyptic number.

21456114 is an abundant number, since it is smaller than the sum of its proper divisors (22936206).

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

21456114 is a wasteful number, since it uses less digits than its factorization.

21456114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123345.

The product of its digits is 960, while the sum is 24.

The square root of 21456114 is about 4632.0744812665. The cubic root of 21456114 is about 277.8755632380.

The spelling of 21456114 in words is "twenty-one million, four hundred fifty-six thousand, one hundred fourteen".