21446338232 has 32 divisors (see below), whose sum is σ = 43888366080. Its totient is φ = 9743700960.

The previous prime is 21446338213. The next prime is 21446338327. The reversal of 21446338232 is 23283364412.

It is a super-2 number, since 2×21446338232² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131723 + ... + 245445.

It is an arithmetic number, because the mean of its divisors is an integer number (1371511440).

Almost surely, 2^21446338232 is an apocalyptic number.

21446338232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21446338232 is an abundant number, since it is smaller than the sum of its proper divisors (22442027848).

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

21446338232 is a wasteful number, since it uses less digits than its factorization.

21446338232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115883 (or 115879 counting only the distinct ones).

The product of its digits is 165888, while the sum is 38.

The spelling of 21446338232 in words is "twenty-one billion, four hundred forty-six million, three hundred thirty-eight thousand, two hundred thirty-two".