21414758 has 16 divisors (see below), whose sum is σ = 32823360. Its totient is φ = 10475496.

The previous prime is 21414739. The next prime is 21414761. The reversal of 21414758 is 85741412.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40685 + ... + 41207.

It is an arithmetic number, because the mean of its divisors is an integer number (2051460).

Almost surely, 2^21414758 is an apocalyptic number.

21414758 is a deficient number, since it is larger than the sum of its proper divisors (11408602).

21414758 is a wasteful number, since it uses less digits than its factorization.

21414758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931.

The product of its digits is 8960, while the sum is 32.

The square root of 21414758 is about 4627.6082375240. The cubic root of 21414758 is about 277.6969162085.

The spelling of 21414758 in words is "twenty-one million, four hundred fourteen thousand, seven hundred fifty-eight".