117828118 has 4 divisors (see below), whose sum is σ = 176742180. Its totient is φ = 58914058.

The previous prime is 117828049. The next prime is 117828119. The reversal of 117828118 is 811828711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 811828711 = 6737 ⋅120503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117828119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29457028 + ... + 29457031.

It is an arithmetic number, because the mean of its divisors is an integer number (44185545).

Almost surely, 2^117828118 is an apocalyptic number.

117828118 is a deficient number, since it is larger than the sum of its proper divisors (58914062).

117828118 is an equidigital number, since it uses as much as digits as its factorization.

117828118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58914061.

The product of its digits is 7168, while the sum is 37.

The square root of 117828118 is about 10854.8660977462. The cubic root of 117828118 is about 490.2485452947.

It can be divided in two parts, 11782 and 8118, that added together give a triangular number (19900 = T₁₉₉).

The spelling of 117828118 in words is "one hundred seventeen million, eight hundred twenty-eight thousand, one hundred eighteen".