133980000 has 480 divisors, whose sum is σ = 566818560. Its totient is φ = 26880000.

The previous prime is 133979987. The next prime is 133980013. The reversal of 133980000 is 89331.

It is an interprime number because it is at equal distance from previous prime (133979987) and next prime (133980013).

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 79 ways as a sum of consecutive naturals, for example, 4619986 + ... + 4620014.

It is an arithmetic number, because the mean of its divisors is an integer number (1180872).

Almost surely, 2^133980000 is an apocalyptic number.

133980000 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 133980000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283409280).

133980000 is an abundant number, since it is smaller than the sum of its proper divisors (432838560).

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

133980000 is a wasteful number, since it uses less digits than its factorization.

133980000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 133980000 is about 11574.9730021283. The cubic root of 133980000 is about 511.6975345690.

The spelling of 133980000 in words is "one hundred thirty-three million, nine hundred eighty thousand".