133466780 has 48 divisors (see below), whose sum is σ = 294147840. Its totient is φ = 50803200.

The previous prime is 133466759. The next prime is 133466783. The reversal of 133466780 is 87664331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133466783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36056 + ... + 39584.

It is an arithmetic number, because the mean of its divisors is an integer number (6128080).

Almost surely, 2^133466780 is an apocalyptic number.

133466780 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 133466780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147073920).

133466780 is an abundant number, since it is smaller than the sum of its proper divisors (160681060).

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

133466780 is a wasteful number, since it uses less digits than its factorization.

133466780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3630 (or 3628 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 133466780 is about 11552.7823488543. The cubic root of 133466780 is about 511.0433338327.

The spelling of 133466780 in words is "one hundred thirty-three million, four hundred sixty-six thousand, seven hundred eighty".