133965720 has 96 divisors (see below), whose sum is σ = 497596320. Its totient is φ = 30620160.

The previous prime is 133965719. The next prime is 133965721. The reversal of 133965720 is 27569331.

It is an interprime number because it is at equal distance from previous prime (133965719) and next prime (133965721).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133965721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24061 + ... + 29100.

It is an arithmetic number, because the mean of its divisors is an integer number (5183295).

Almost surely, 2^133965720 is an apocalyptic number.

133965720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133965720 is an abundant number, since it is smaller than the sum of its proper divisors (363630600).

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

133965720 is a wasteful number, since it uses less digits than its factorization.

133965720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53185 (or 53178 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 133965720 is about 11574.3561376001. The cubic root of 133965720 is about 511.6793544914.

The spelling of 133965720 in words is "one hundred thirty-three million, nine hundred sixty-five thousand, seven hundred twenty".