133560240 has 80 divisors (see below), whose sum is σ = 451685376. Its totient is φ = 32377600.

The previous prime is 133560239. The next prime is 133560263. The reversal of 133560240 is 42065331.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 133560240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22656 + ... + 27935.

Almost surely, 2^133560240 is an apocalyptic number.

133560240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133560240 is an abundant number, since it is smaller than the sum of its proper divisors (318125136).

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

133560240 is a wasteful number, since it uses less digits than its factorization.

133560240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50618 (or 50612 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 133560240 is about 11556.8265540329. The cubic root of 133560240 is about 511.1625918880.

The spelling of 133560240 in words is "one hundred thirty-three million, five hundred sixty thousand, two hundred forty".