21298582932 has 48 divisors (see below), whose sum is σ = 54378476544. Its totient is φ = 6434604000.

The previous prime is 21298582927. The next prime is 21298582951. The reversal of 21298582932 is 23928589212.

It is a super-2 number, since 2×21298582932² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200044 + ... + 287427.

It is an arithmetic number, because the mean of its divisors is an integer number (1132884928).

Almost surely, 2^21298582932 is an apocalyptic number.

21298582932 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21298582932 is an abundant number, since it is smaller than the sum of its proper divisors (33079893612).

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

21298582932 is a wasteful number, since it uses less digits than its factorization.

21298582932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487820 (or 487818 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 51.

The spelling of 21298582932 in words is "twenty-one billion, two hundred ninety-eight million, five hundred eighty-two thousand, nine hundred thirty-two".