21238467200 has 96 divisors (see below), whose sum is σ = 55552008060. Its totient is φ = 7995637760.

The previous prime is 21238467179. The next prime is 21238467209. The reversal of 21238467200 is 276483212.

It can be written as a sum of positive squares in 6 ways, for example, as 8386163776 + 12852303424 = 91576^2 + 113368^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (21238467209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140807 + ... + 249606.

Almost surely, 2^21238467200 is an apocalyptic number.

21238467200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21238467200 is an abundant number, since it is smaller than the sum of its proper divisors (34313540860).

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

21238467200 is a wasteful number, since it uses less digits than its factorization.

21238467200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390454 (or 390437 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 21238467200 in words is "twenty-one billion, two hundred thirty-eight million, four hundred sixty-seven thousand, two hundred".