133974236 has 24 divisors (see below), whose sum is σ = 256569600. Its totient is φ = 60706800.

The previous prime is 133974233. The next prime is 133974251. The reversal of 133974236 is 632479331.

It is a self number, because there is not a number n which added to its sum of digits gives 133974236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133974233) 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, 9965 + ... + 19163.

It is an arithmetic number, because the mean of its divisors is an integer number (10690400).

Almost surely, 2^133974236 is an apocalyptic number.

It is an amenable number.

133974236 is a deficient number, since it is larger than the sum of its proper divisors (122595364).

133974236 is a wasteful number, since it uses less digits than its factorization.

133974236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9545 (or 9543 counting only the distinct ones).

The product of its digits is 81648, while the sum is 38.

The square root of 133974236 is about 11574.7240139884. The cubic root of 133974236 is about 511.6901964915.

The spelling of 133974236 in words is "one hundred thirty-three million, nine hundred seventy-four thousand, two hundred thirty-six".