116778780 has 96 divisors (see below), whose sum is σ = 384713280. Its totient is φ = 29306880.

The previous prime is 116778773. The next prime is 116778793. The reversal of 116778780 is 87877611.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2820 + ... + 15540.

It is an arithmetic number, because the mean of its divisors is an integer number (4007430).

Almost surely, 2^116778780 is an apocalyptic number.

116778780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 116778780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192356640).

116778780 is an abundant number, since it is smaller than the sum of its proper divisors (267934500).

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

116778780 is a wasteful number, since it uses less digits than its factorization.

116778780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12756 (or 12748 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 45.

The square root of 116778780 is about 10806.4230899961. The cubic root of 116778780 is about 488.7888734417.

The spelling of 116778780 in words is "one hundred sixteen million, seven hundred seventy-eight thousand, seven hundred eighty".