133085172 has 48 divisors (see below), whose sum is σ = 346655232. Its totient is φ = 39389280.

The previous prime is 133085149. The next prime is 133085191. The reversal of 133085172 is 271580331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6048 + ... + 17399.

It is an arithmetic number, because the mean of its divisors is an integer number (7221984).

Almost surely, 2^133085172 is an apocalyptic number.

133085172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133085172 is an abundant number, since it is smaller than the sum of its proper divisors (213570060).

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

133085172 is a wasteful number, since it uses less digits than its factorization.

133085172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23508 (or 23506 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 133085172 is about 11536.2546781874. The cubic root of 133085172 is about 510.5558108062. Note that the first 3 decimals are identical.

The spelling of 133085172 in words is "one hundred thirty-three million, eighty-five thousand, one hundred seventy-two".