133457712 has 20 divisors (see below), whose sum is σ = 344765880. Its totient is φ = 44485888.

The previous prime is 133457689. The next prime is 133457713. The reversal of 133457712 is 217754331.

It is not an unprimeable number, because it can be changed into a prime (133457713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1390137 + ... + 1390232.

It is an arithmetic number, because the mean of its divisors is an integer number (17238294).

Almost surely, 2^133457712 is an apocalyptic number.

133457712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133457712 is an abundant number, since it is smaller than the sum of its proper divisors (211308168).

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

133457712 is a wasteful number, since it uses less digits than its factorization.

133457712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780380 (or 2780374 counting only the distinct ones).

The product of its digits is 17640, while the sum is 33.

The square root of 133457712 is about 11552.3898826174. The cubic root of 133457712 is about 511.0317598018.

The spelling of 133457712 in words is "one hundred thirty-three million, four hundred fifty-seven thousand, seven hundred twelve".