21373362 has 16 divisors (see below), whose sum is σ = 47496480. Its totient is φ = 7124436.

The previous prime is 21373361. The next prime is 21373379. The reversal of 21373362 is 26337312.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (21373361) 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, 197848 + ... + 197955.

It is an arithmetic number, because the mean of its divisors is an integer number (2968530).

Almost surely, 2^21373362 is an apocalyptic number.

21373362 is an abundant number, since it is smaller than the sum of its proper divisors (26123118).

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

21373362 is a wasteful number, since it uses less digits than its factorization.

21373362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395814 (or 395808 counting only the distinct ones).

The product of its digits is 4536, while the sum is 27.

The square root of 21373362 is about 4623.1333530410. The cubic root of 21373362 is about 277.5178659060.

The spelling of 21373362 in words is "twenty-one million, three hundred seventy-three thousand, three hundred sixty-two".