21230461392 has 80 divisors (see below), whose sum is σ = 63326696832. Its totient is φ = 6003302400.

The previous prime is 21230461391. The next prime is 21230461403. The reversal of 21230461392 is 29316403212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230461391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293109 + ... + 358292.

Almost surely, 2^21230461392 is an apocalyptic number.

It is an amenable number.

21230461392 is an abundant number, since it is smaller than the sum of its proper divisors (42096235440).

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

21230461392 is a wasteful number, since it uses less digits than its factorization.

21230461392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651516 (or 651510 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The spelling of 21230461392 in words is "twenty-one billion, two hundred thirty million, four hundred sixty-one thousand, three hundred ninety-two".