133938768 has 20 divisors (see below), whose sum is σ = 346008608. Its totient is φ = 44646240.

The previous prime is 133938713. The next prime is 133938773. The reversal of 133938768 is 867839331.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 2790391 = 133938768 / (1 + 3 + 3 + 9 + 3 + 8 + 7 + 6 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1395148 + ... + 1395243.

Almost surely, 2^133938768 is an apocalyptic number.

It is an amenable number.

133938768 is an abundant number, since it is smaller than the sum of its proper divisors (212069840).

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

133938768 is a wasteful number, since it uses less digits than its factorization.

133938768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2790402 (or 2790396 counting only the distinct ones).

The product of its digits is 653184, while the sum is 48.

The square root of 133938768 is about 11573.1917810084. The cubic root of 133938768 is about 511.6450379839.

The spelling of 133938768 in words is "one hundred thirty-three million, nine hundred thirty-eight thousand, seven hundred sixty-eight".