133288656 has 40 divisors (see below), whose sum is σ = 349055040. Its totient is φ = 43819776.

The previous prime is 133288637. The next prime is 133288679. The reversal of 133288656 is 656882331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15516 + ... + 22523.

It is an arithmetic number, because the mean of its divisors is an integer number (8726376).

Almost surely, 2^133288656 is an apocalyptic number.

133288656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133288656 is an abundant number, since it is smaller than the sum of its proper divisors (215766384).

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

133288656 is a wasteful number, since it uses less digits than its factorization.

133288656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38123 (or 38117 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 133288656 is about 11545.0706364231. The cubic root of 133288656 is about 510.8158874513.

The spelling of 133288656 in words is "one hundred thirty-three million, two hundred eighty-eight thousand, six hundred fifty-six".