32138440 has 16 divisors (see below), whose sum is σ = 72311580. Its totient is φ = 12855360.

The previous prime is 32138437. The next prime is 32138453. The reversal of 32138440 is 4483123.

It can be written as a sum of positive squares in 2 ways, for example, as 30184036 + 1954404 = 5494^2 + 1398^2 .

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, 401691 + ... + 401770.

Almost surely, 2^32138440 is an apocalyptic number.

It is an amenable number.

32138440 is an abundant number, since it is smaller than the sum of its proper divisors (40173140).

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

32138440 is a wasteful number, since it uses less digits than its factorization.

32138440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803472 (or 803468 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 32138440 is about 5669.0775263706. The cubic root of 32138440 is about 317.9373846628.

The spelling of 32138440 in words is "thirty-two million, one hundred thirty-eight thousand, four hundred forty".