117305780 has 24 divisors (see below), whose sum is σ = 260833608. Its totient is φ = 44162048.

The previous prime is 117305761. The next prime is 117305807. The reversal of 117305780 is 87503711.

It can be written as a sum of positive squares in 4 ways, for example, as 4351396 + 112954384 = 2086^2 + 10628^2 .

It is a super-4 number, since 4×117305780⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172169 + ... + 172848.

It is an arithmetic number, because the mean of its divisors is an integer number (10868067).

Almost surely, 2^117305780 is an apocalyptic number.

117305780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117305780 is an abundant number, since it is smaller than the sum of its proper divisors (143527828).

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

117305780 is a wasteful number, since it uses less digits than its factorization.

117305780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345043 (or 345041 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 117305780 is about 10830.7792886754. The cubic root of 117305780 is about 489.5230399791.

The spelling of 117305780 in words is "one hundred seventeen million, three hundred five thousand, seven hundred eighty".