133404564 has 24 divisors (see below), whose sum is σ = 311508288. Its totient is φ = 44435200.

The previous prime is 133404547. The next prime is 133404581. The reversal of 133404564 is 465404331.

It is an interprime number because it is at equal distance from previous prime (133404547) and next prime (133404581).

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 7 ways as a sum of consecutive naturals, for example, 17089 + ... + 23639.

It is an arithmetic number, because the mean of its divisors is an integer number (12979512).

Almost surely, 2^133404564 is an apocalyptic number.

It is an amenable number.

133404564 is an abundant number, since it is smaller than the sum of its proper divisors (178103724).

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

133404564 is a wasteful number, since it uses less digits than its factorization.

133404564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8255 (or 8253 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 133404564 is about 11550.0893503037. The cubic root of 133404564 is about 510.9639132863.

Adding to 133404564 its reverse (465404331), we get a palindrome (598808895).

The spelling of 133404564 in words is "one hundred thirty-three million, four hundred four thousand, five hundred sixty-four".