21374802 has 12 divisors (see below), whose sum is σ = 46312110. Its totient is φ = 7124928.

The previous prime is 21374783. The next prime is 21374803. The reversal of 21374802 is 20847312.

It can be written as a sum of positive squares in only one way, i.e., 18481401 + 2893401 = 4299^2 + 1701^2 .

It is not an unprimeable number, because it can be changed into a prime (21374803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 593727 + ... + 593762.

Almost surely, 2^21374802 is an apocalyptic number.

21374802 is an abundant number, since it is smaller than the sum of its proper divisors (24937308).

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

21374802 is a wasteful number, since it uses less digits than its factorization.

21374802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187497 (or 1187494 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 21374802 is about 4623.2890889496. The cubic root of 21374802 is about 277.5240982238.

The spelling of 21374802 in words is "twenty-one million, three hundred seventy-four thousand, eight hundred two".