133189380 has 96 divisors (see below), whose sum is σ = 417271680. Its totient is φ = 35268480.

The previous prime is 133189369. The next prime is 133189391. The reversal of 133189380 is 83981331.

It is an interprime number because it is at equal distance from previous prime (133189369) and next prime (133189391).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 83995 + ... + 85565.

It is an arithmetic number, because the mean of its divisors is an integer number (4346580).

Almost surely, 2^133189380 is an apocalyptic number.

133189380 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 133189380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208635840).

133189380 is an abundant number, since it is smaller than the sum of its proper divisors (284082300).

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

133189380 is a wasteful number, since it uses less digits than its factorization.

133189380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746 (or 1738 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 133189380 is about 11540.7703382400. The cubic root of 133189380 is about 510.6890340612.

The spelling of 133189380 in words is "one hundred thirty-three million, one hundred eighty-nine thousand, three hundred eighty".