133913244 has 48 divisors (see below), whose sum is σ = 322237440. Its totient is φ = 43263360.

The previous prime is 133913237. The next prime is 133913251. The reversal of 133913244 is 442319331.

It is an interprime number because it is at equal distance from previous prime (133913237) and next prime (133913251).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50389 + ... + 52979.

It is an arithmetic number, because the mean of its divisors is an integer number (6713280).

Almost surely, 2^133913244 is an apocalyptic number.

It is an amenable number.

133913244 is an abundant number, since it is smaller than the sum of its proper divisors (188324196).

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

133913244 is a wasteful number, since it uses less digits than its factorization.

133913244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2730 (or 2728 counting only the distinct ones).

The product of its digits is 7776, while the sum is 30.

The square root of 133913244 is about 11572.0890076079. The cubic root of 133913244 is about 511.6125354263.

The spelling of 133913244 in words is "one hundred thirty-three million, nine hundred thirteen thousand, two hundred forty-four".