133670720 has 28 divisors (see below), whose sum is σ = 318304164. Its totient is φ = 53468160.

The previous prime is 133670689. The next prime is 133670737. The reversal of 133670720 is 27076331.

133670720 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 85673536 + 47997184 = 9256^2 + 6928^2 .

It is a super-2 number, since 2×133670720² = 35735722770636800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208541 + ... + 209180.

Almost surely, 2^133670720 is an apocalyptic number.

133670720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133670720 is an abundant number, since it is smaller than the sum of its proper divisors (184633444).

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

133670720 is an equidigital number, since it uses as much as digits as its factorization.

133670720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417738 (or 417728 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 133670720 is about 11561.6054248534. The cubic root of 133670720 is about 511.3034962941.

The spelling of 133670720 in words is "one hundred thirty-three million, six hundred seventy thousand, seven hundred twenty".