133065320 has 32 divisors (see below), whose sum is σ = 307492200. Its totient is φ = 51787008.

The previous prime is 133065313. The next prime is 133065323. The reversal of 133065320 is 23560331.

It can be written as a sum of positive squares in 4 ways, for example, as 108284836 + 24780484 = 10406^2 + 4978^2 .

It is not an unprimeable number, because it can be changed into a prime (133065323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43475 + ... + 46434.

Almost surely, 2^133065320 is an apocalyptic number.

133065320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133065320 is an abundant number, since it is smaller than the sum of its proper divisors (174426880).

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

133065320 is a wasteful number, since it uses less digits than its factorization.

133065320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89957 (or 89953 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 133065320 is about 11535.3942282004. The cubic root of 133065320 is about 510.5304234100.

The spelling of 133065320 in words is "one hundred thirty-three million, sixty-five thousand, three hundred twenty".