132447440 has 20 divisors (see below), whose sum is σ = 307940484. Its totient is φ = 52978944.

The previous prime is 132447433. The next prime is 132447467. The reversal of 132447440 is 44744231.

It can be written as a sum of positive squares in 2 ways, for example, as 59105344 + 73342096 = 7688^2 + 8564^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827717 + ... + 827876.

Almost surely, 2^132447440 is an apocalyptic number.

132447440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

132447440 is an abundant number, since it is smaller than the sum of its proper divisors (175493044).

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

132447440 is a wasteful number, since it uses less digits than its factorization.

132447440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655606 (or 1655600 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 132447440 is about 11508.5811462578. The cubic root of 132447440 is about 509.7389924216.

The spelling of 132447440 in words is "one hundred thirty-two million, four hundred forty-seven thousand, four hundred forty".