133508412 has 60 divisors (see below), whose sum is σ = 369563040. Its totient is φ = 41883264.

The previous prime is 133508407. The next prime is 133508477. The reversal of 133508412 is 214805331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6612 + ... + 17627.

It is an arithmetic number, because the mean of its divisors is an integer number (6159384).

Almost surely, 2^133508412 is an apocalyptic number.

133508412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133508412 is an abundant number, since it is smaller than the sum of its proper divisors (236054628).

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

133508412 is a wasteful number, since it uses less digits than its factorization.

133508412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24272 (or 24261 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 133508412 is about 11554.5840253988. The cubic root of 133508412 is about 511.0964645176.

The spelling of 133508412 in words is "one hundred thirty-three million, five hundred eight thousand, four hundred twelve".