133902688 has 48 divisors (see below), whose sum is σ = 281546496. Its totient is φ = 62536320.

The previous prime is 133902677. The next prime is 133902697. The reversal of 133902688 is 886209331.

It is a self number, because there is not a number n which added to its sum of digits gives 133902688.

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, 29533 + ... + 33763.

It is an arithmetic number, because the mean of its divisors is an integer number (5865552).

Almost surely, 2^133902688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133902688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140773248).

133902688 is an abundant number, since it is smaller than the sum of its proper divisors (147643808).

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

133902688 is a wasteful number, since it uses less digits than its factorization.

133902688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4307 (or 4299 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 133902688 is about 11571.6329011942. The cubic root of 133902688 is about 511.5990920862.

The spelling of 133902688 in words is "one hundred thirty-three million, nine hundred two thousand, six hundred eighty-eight".