133509704 has 32 divisors (see below), whose sum is σ = 270708480. Its totient is φ = 61488384.

The previous prime is 133509689. The next prime is 133509709. The reversal of 133509704 is 407905331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (133509709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4052 + ... + 16835.

It is an arithmetic number, because the mean of its divisors is an integer number (8459640).

Almost surely, 2^133509704 is an apocalyptic number.

It is an amenable number.

133509704 is an abundant number, since it is smaller than the sum of its proper divisors (137198776).

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

133509704 is a wasteful number, since it uses less digits than its factorization.

133509704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20957 (or 20953 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 133509704 is about 11554.6399338101. The cubic root of 133509704 is about 511.0981131890.

The spelling of 133509704 in words is "one hundred thirty-three million, five hundred nine thousand, seven hundred four".