133457780 has 12 divisors (see below), whose sum is σ = 280261380. Its totient is φ = 53383104.

The previous prime is 133457773. The next prime is 133457789. The reversal of 133457780 is 87754331.

It can be written as a sum of positive squares in 2 ways, for example, as 14167696 + 119290084 = 3764^2 + 10922^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133457789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3336425 + ... + 3336464.

It is an arithmetic number, because the mean of its divisors is an integer number (23355115).

Almost surely, 2^133457780 is an apocalyptic number.

133457780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133457780 is an abundant number, since it is smaller than the sum of its proper divisors (146803600).

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

133457780 is a wasteful number, since it uses less digits than its factorization.

133457780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6672898 (or 6672896 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 133457780 is about 11552.3928257310. The cubic root of 133457780 is about 511.0318465963.

The spelling of 133457780 in words is "one hundred thirty-three million, four hundred fifty-seven thousand, seven hundred eighty".