133513380 has 576 divisors, whose sum is σ = 590284800. Its totient is φ = 24261120.

The previous prime is 133513363. The next prime is 133513421. The reversal of 133513380 is 83315331.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 191 ways as a sum of consecutive naturals, for example, 7027011 + ... + 7027029.

It is an arithmetic number, because the mean of its divisors is an integer number (1024800).

Almost surely, 2^133513380 is an apocalyptic number.

133513380 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 133513380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295142400).

133513380 is an abundant number, since it is smaller than the sum of its proper divisors (456771420).

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

133513380 is a wasteful number, since it uses less digits than its factorization.

133513380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 133513380 is about 11554.7990030117. The cubic root of 133513380 is about 511.1028039328.

The spelling of 133513380 in words is "one hundred thirty-three million, five hundred thirteen thousand, three hundred eighty".