21294303732 has 96 divisors (see below), whose sum is σ = 62583427200. Its totient is φ = 6207238656.

The previous prime is 21294303727. The next prime is 21294303733. The reversal of 21294303732 is 23730349212.

21294303732 is a `hidden beast` number, since 212 + 9 + 430 + 3 + 7 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21294303733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 372453 + ... + 425804.

It is an arithmetic number, because the mean of its divisors is an integer number (651910700).

Almost surely, 2^21294303732 is an apocalyptic number.

It is an amenable number.

21294303732 is an abundant number, since it is smaller than the sum of its proper divisors (41289123468).

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

21294303732 is a wasteful number, since it uses less digits than its factorization.

21294303732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798302 (or 798294 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The spelling of 21294303732 in words is "twenty-one billion, two hundred ninety-four million, three hundred three thousand, seven hundred thirty-two".