133211760 has 80 divisors (see below), whose sum is σ = 450506880. Its totient is φ = 32293120.

The previous prime is 133211753. The next prime is 133211773. The reversal of 133211760 is 67112331.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a self number, because there is not a number n which added to its sum of digits gives 133211760.

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, 22590 + ... + 27869.

It is an arithmetic number, because the mean of its divisors is an integer number (5631336).

Almost surely, 2^133211760 is an apocalyptic number.

133211760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133211760 is an abundant number, since it is smaller than the sum of its proper divisors (317295120).

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

133211760 is a wasteful number, since it uses less digits than its factorization.

133211760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50486 (or 50480 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 133211760 is about 11541.7399034981. The cubic root of 133211760 is about 510.7176363929.

The spelling of 133211760 in words is "one hundred thirty-three million, two hundred eleven thousand, seven hundred sixty".