21202368 has 56 divisors (see below), whose sum is σ = 61203840. Its totient is φ = 6424320.

The previous prime is 21202367. The next prime is 21202387. The reversal of 21202368 is 86320212.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202367) 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, 2908 + ... + 7131.

Almost surely, 2^21202368 is an apocalyptic number.

It is an amenable number.

21202368 is an abundant number, since it is smaller than the sum of its proper divisors (40001472).

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

21202368 is a wasteful number, since it uses less digits than its factorization.

21202368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10065 (or 10055 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 21202368 is about 4604.6029144759. The cubic root of 21202368 is about 276.7758050733.

The spelling of 21202368 in words is "twenty-one million, two hundred two thousand, three hundred sixty-eight".