133271760 has 80 divisors (see below), whose sum is σ = 414437760. Its totient is φ = 35427840.

The previous prime is 133271707. The next prime is 133271767. The reversal of 133271760 is 67172331.

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

It is a super-2 number, since 2×133271760² = 35522724026995200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133271767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100381 + ... + 101699.

It is an arithmetic number, because the mean of its divisors is an integer number (5180472).

Almost surely, 2^133271760 is an apocalyptic number.

133271760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133271760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207218880).

133271760 is an abundant number, since it is smaller than the sum of its proper divisors (281166000).

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

133271760 is a wasteful number, since it uses less digits than its factorization.

133271760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756 (or 1750 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 133271760 is about 11544.3388723651. The cubic root of 133271760 is about 510.7943024437.

The spelling of 133271760 in words is "one hundred thirty-three million, two hundred seventy-one thousand, seven hundred sixty".