132861440 has 40 divisors (see below), whose sum is σ = 318562200. Its totient is φ = 53143552.

The previous prime is 132861437. The next prime is 132861473. The reversal of 132861440 is 44168231.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23390 + ... + 28509.

It is an arithmetic number, because the mean of its divisors is an integer number (7964055).

Almost surely, 2^132861440 is an apocalyptic number.

132861440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

132861440 is an abundant number, since it is smaller than the sum of its proper divisors (185700760).

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

132861440 is an frugal number, since it uses more digits than its factorization.

132861440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51922 (or 51906 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 132861440 is about 11526.5536913685. The cubic root of 132861440 is about 510.2695486557.

The spelling of 132861440 in words is "one hundred thirty-two million, eight hundred sixty-one thousand, four hundred forty".