117785388 has 96 divisors (see below), whose sum is σ = 323534848. Its totient is φ = 32659200.

The previous prime is 117785377. The next prime is 117785429. The reversal of 117785388 is 883587711.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 650658 + ... + 650838.

Almost surely, 2^117785388 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 117785388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161767424).

117785388 is an abundant number, since it is smaller than the sum of its proper divisors (205749460).

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

117785388 is a wasteful number, since it uses less digits than its factorization.

117785388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 381 counting only the distinct ones).

The product of its digits is 376320, while the sum is 48.

The square root of 117785388 is about 10852.8976775790. The cubic root of 117785388 is about 490.1892757601.

The spelling of 117785388 in words is "one hundred seventeen million, seven hundred eighty-five thousand, three hundred eighty-eight".