32497728820 has 24 divisors (see below), whose sum is σ = 71837085600. Its totient is φ = 12314928672.

The previous prime is 32497728743. The next prime is 32497728821. The reversal of 32497728820 is 2882779423.

It is a super-2 number, since 2×32497728820² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32497728821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42759790 + ... + 42760549.

It is an arithmetic number, because the mean of its divisors is an integer number (2993211900).

Almost surely, 2^32497728820 is an apocalyptic number.

It is an amenable number.

32497728820 is an abundant number, since it is smaller than the sum of its proper divisors (39339356780).

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

32497728820 is a wasteful number, since it uses less digits than its factorization.

32497728820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85520367 (or 85520365 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 32497728820 in words is "thirty-two billion, four hundred ninety-seven million, seven hundred twenty-eight thousand, eight hundred twenty".