43232987920 has 40 divisors (see below), whose sum is σ = 102968331480. Its totient is φ = 16871408640.

The previous prime is 43232987891. The next prime is 43232987969. The reversal of 43232987920 is 2978923234.

It can be written as a sum of positive squares in 4 ways, for example, as 1479787024 + 41753200896 = 38468^2 + 204336^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6587115 + ... + 6593674.

It is an arithmetic number, because the mean of its divisors is an integer number (2574208287).

Almost surely, 2^43232987920 is an apocalyptic number.

43232987920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43232987920 is an abundant number, since it is smaller than the sum of its proper divisors (59735343560).

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

43232987920 is a wasteful number, since it uses less digits than its factorization.

43232987920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13180843 (or 13180837 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 43232987920 in words is "forty-three billion, two hundred thirty-two million, nine hundred eighty-seven thousand, nine hundred twenty".