132405644 has 18 divisors (see below), whose sum is σ = 269540460. Its totient is φ = 56745192.

The previous prime is 132405631. The next prime is 132405683. The reversal of 132405644 is 446504231.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 337574 + ... + 337965.

It is an arithmetic number, because the mean of its divisors is an integer number (14974470).

Almost surely, 2^132405644 is an apocalyptic number.

132405644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

132405644 is an abundant number, since it is smaller than the sum of its proper divisors (137134816).

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

132405644 is a wasteful number, since it uses less digits than its factorization.

132405644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675557 (or 675548 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 132405644 is about 11506.7651405597. The cubic root of 132405644 is about 509.6853678986.

Adding to 132405644 its reverse (446504231), we get a palindrome (578909875).

The spelling of 132405644 in words is "one hundred thirty-two million, four hundred five thousand, six hundred forty-four".