117849728 has 16 divisors (see below), whose sum is σ = 234779010. Its totient is φ = 58924800.

The previous prime is 117849709. The next prime is 117849731. The reversal of 117849728 is 827948711.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 96983104 + 20866624 = 9848^2 + 4568^2 .

It is a tau number, because it is divible by the number of its divisors (16).

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 as a sum of consecutive naturals, namely, 460223 + ... + 460478.

Almost surely, 2^117849728 is an apocalyptic number.

It is an amenable number.

117849728 is a deficient number, since it is larger than the sum of its proper divisors (116929282).

117849728 is an frugal number, since it uses more digits than its factorization.

117849728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920715 (or 920703 counting only the distinct ones).

The product of its digits is 225792, while the sum is 47.

The square root of 117849728 is about 10855.8614582169. The cubic root of 117849728 is about 490.2785144385.

It can be divided in two parts, 11784 and 9728, that added together give a palindrome (21512).

The spelling of 117849728 in words is "one hundred seventeen million, eight hundred forty-nine thousand, seven hundred twenty-eight".