133115304 has 128 divisors (see below), whose sum is σ = 406978560. Its totient is φ = 35417088.

The previous prime is 133115303. The next prime is 133115341. The reversal of 133115304 is 403511331.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (133115303) 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 31 ways as a sum of consecutive naturals, for example, 362529 + ... + 362895.

It is an arithmetic number, because the mean of its divisors is an integer number (3179520).

Almost surely, 2^133115304 is an apocalyptic number.

133115304 is a gapful number since it is divisible by the number (14) 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 133115304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203489280).

133115304 is an abundant number, since it is smaller than the sum of its proper divisors (273863256).

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

133115304 is a wasteful number, since it uses less digits than its factorization.

133115304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 133115304 is about 11537.5605740555. The cubic root of 133115304 is about 510.5943397837.

Adding to 133115304 its reverse (403511331), we get a palindrome (536626635).

The spelling of 133115304 in words is "one hundred thirty-three million, one hundred fifteen thousand, three hundred four".