117066820 has 24 divisors (see below), whose sum is σ = 264751704. Its totient is φ = 43224576.

The previous prime is 117066739. The next prime is 117066821. The reversal of 117066820 is 28660711.

It can be written as a sum of positive squares in 4 ways, for example, as 28217344 + 88849476 = 5312^2 + 9426^2 .

It is not an unprimeable number, because it can be changed into a prime (117066821) 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 in 7 ways as a sum of consecutive naturals, for example, 224869 + ... + 225388.

It is an arithmetic number, because the mean of its divisors is an integer number (11031321).

Almost surely, 2^117066820 is an apocalyptic number.

117066820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117066820 is an abundant number, since it is smaller than the sum of its proper divisors (147684884).

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

117066820 is a wasteful number, since it uses less digits than its factorization.

117066820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450279 (or 450277 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 117066820 is about 10819.7421411048. The cubic root of 117066820 is about 489.1904165700.

The spelling of 117066820 in words is "one hundred seventeen million, sixty-six thousand, eight hundred twenty".