21412602 has 24 divisors (see below), whose sum is σ = 46695636. Its totient is φ = 7091136.

The previous prime is 21412591. The next prime is 21412621. The reversal of 21412602 is 20621412.

21412602 is a `hidden beast` number, since 21 + 41 + 2 + 602 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17214201 + 4198401 = 4149^2 + 2049^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 963 + ... + 6614.

Almost surely, 2^21412602 is an apocalyptic number.

21412602 is an abundant number, since it is smaller than the sum of its proper divisors (25283034).

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

21412602 is a wasteful number, since it uses less digits than its factorization.

21412602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7742 (or 7739 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 21412602 is about 4627.3752819498. The cubic root of 21412602 is about 277.6875965508.

The spelling of 21412602 in words is "twenty-one million, four hundred twelve thousand, six hundred two".