132389640 has 160 divisors (see below), whose sum is σ = 460647000. Its totient is φ = 34062336.

The previous prime is 132389617. The next prime is 132389641. The reversal of 132389640 is 46983231.

132389640 is a `hidden beast` number, since 1 + 3 + 2 + 3 + 8 + 9 + 640 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 65901924 + 66487716 = 8118^2 + 8154^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 132389595 and 132389604.

It is not an unprimeable number, because it can be changed into a prime (132389641) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 93256 + ... + 94664.

Almost surely, 2^132389640 is an apocalyptic number.

132389640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 132389640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230323500).

132389640 is an abundant number, since it is smaller than the sum of its proper divisors (328257360).

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

132389640 is a wasteful number, since it uses less digits than its factorization.

132389640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461 (or 1448 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 132389640 is about 11506.0697025526. The cubic root of 132389640 is about 509.6648316812.

The spelling of 132389640 in words is "one hundred thirty-two million, three hundred eighty-nine thousand, six hundred forty".