117903816 has 64 divisors (see below), whose sum is σ = 344760000. Its totient is φ = 37231488.

The previous prime is 117903769. The next prime is 117903817. The reversal of 117903816 is 618309711.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117903817) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10261 + ... + 18468.

It is an arithmetic number, because the mean of its divisors is an integer number (5386875).

Almost surely, 2^117903816 is an apocalyptic number.

It is an amenable number.

117903816 is an abundant number, since it is smaller than the sum of its proper divisors (226856184).

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

117903816 is a wasteful number, since it uses less digits than its factorization.

117903816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28763 (or 28753 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 117903816 is about 10858.3523612010. The cubic root of 117903816 is about 490.3535086108.

The spelling of 117903816 in words is "one hundred seventeen million, nine hundred three thousand, eight hundred sixteen".