133756672 has 54 divisors (see below), whose sum is σ = 310610328. Its totient is φ = 57318912.

The previous prime is 133756669. The next prime is 133756673. The reversal of 133756672 is 276657331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133756673) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7213 + ... + 17875.

Almost surely, 2^133756672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133756672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155305164).

133756672 is an abundant number, since it is smaller than the sum of its proper divisors (176853656).

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

133756672 is an equidigital number, since it uses as much as digits as its factorization.

133756672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10693 (or 10672 counting only the distinct ones).

The product of its digits is 158760, while the sum is 40.

The square root of 133756672 is about 11565.3219583373. The cubic root of 133756672 is about 511.4130643976.

The spelling of 133756672 in words is "one hundred thirty-three million, seven hundred fifty-six thousand, six hundred seventy-two".