21274068 has 24 divisors (see below), whose sum is σ = 50270080. Its totient is φ = 7001280.

The previous prime is 21274067. The next prime is 21274073. The reversal of 21274068 is 86047212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21274067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10273 + ... + 12168.

Almost surely, 2^21274068 is an apocalyptic number.

It is an amenable number.

21274068 is an abundant number, since it is smaller than the sum of its proper divisors (28996012).

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

21274068 is a wasteful number, since it uses less digits than its factorization.

21274068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22527 (or 22525 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 21274068 is about 4612.3820310117. The cubic root of 21274068 is about 277.0874447515.

The spelling of 21274068 in words is "twenty-one million, two hundred seventy-four thousand, sixty-eight".