133330920 has 32 divisors (see below), whose sum is σ = 399993120. Its totient is φ = 35554880.

The previous prime is 133330919. The next prime is 133330937. The reversal of 133330920 is 29033331.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 555426 + ... + 555665.

It is an arithmetic number, because the mean of its divisors is an integer number (12499785).

Almost surely, 2^133330920 is an apocalyptic number.

133330920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133330920 is an abundant number, since it is smaller than the sum of its proper divisors (266662200).

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

133330920 is a wasteful number, since it uses less digits than its factorization.

133330920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111105 (or 1111101 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 24.

The square root of 133330920 is about 11546.9008829209. The cubic root of 133330920 is about 510.8698726436.

The spelling of 133330920 in words is "one hundred thirty-three million, three hundred thirty thousand, nine hundred twenty".