21265074 has 24 divisors (see below), whose sum is σ = 46207980. Its totient is φ = 7067808.

The previous prime is 21265067. The next prime is 21265093. The reversal of 21265074 is 47056212.

21265074 is a `hidden beast` number, since 2 + 1 + 2 + 650 + 7 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21206025 + 59049 = 4605^2 + 243^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5484 + ... + 8520.

Almost surely, 2^21265074 is an apocalyptic number.

21265074 is an abundant number, since it is smaller than the sum of its proper divisors (24942906).

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

21265074 is a wasteful number, since it uses less digits than its factorization.

21265074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3434 (or 3431 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 21265074 is about 4611.4069436561. The cubic root of 21265074 is about 277.0483913250.

The spelling of 21265074 in words is "twenty-one million, two hundred sixty-five thousand, seventy-four".