133505412 has 24 divisors (see below), whose sum is σ = 311709216. Its totient is φ = 44473728.

The previous prime is 133505399. The next prime is 133505431. The reversal of 133505412 is 214505331.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26703 + ... + 31305.

It is an arithmetic number, because the mean of its divisors is an integer number (12987884).

Almost surely, 2^133505412 is an apocalyptic number.

133505412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133505412 is an abundant number, since it is smaller than the sum of its proper divisors (178203804).

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

133505412 is a wasteful number, since it uses less digits than its factorization.

133505412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7027 (or 7025 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 133505412 is about 11554.4542060627. The cubic root of 133505412 is about 511.0926362922.

The spelling of 133505412 in words is "one hundred thirty-three million, five hundred five thousand, four hundred twelve".