133256040 has 32 divisors (see below), whose sum is σ = 399768480. Its totient is φ = 35534912.

The previous prime is 133256023. The next prime is 133256069. The reversal of 133256040 is 40652331.

It is a happy number.

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 133256040.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555114 + ... + 555353.

It is an arithmetic number, because the mean of its divisors is an integer number (12492765).

Almost surely, 2^133256040 is an apocalyptic number.

133256040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133256040 is an abundant number, since it is smaller than the sum of its proper divisors (266512440).

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

133256040 is a wasteful number, since it uses less digits than its factorization.

133256040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110481 (or 1110477 counting only the distinct ones).

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

The square root of 133256040 is about 11543.6579990920. The cubic root of 133256040 is about 510.7742181634.

The spelling of 133256040 in words is "one hundred thirty-three million, two hundred fifty-six thousand, forty".