78716190 has 32 divisors (see below), whose sum is σ = 215907840. Its totient is φ = 17992224.

The previous prime is 78716177. The next prime is 78716191. The reversal of 78716190 is 9161787.

It is a super-2 number, since 2×78716190² = 12392477136232200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78716191) 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 15 ways as a sum of consecutive naturals, for example, 187210 + ... + 187629.

It is an arithmetic number, because the mean of its divisors is an integer number (6747120).

Almost surely, 2^78716190 is an apocalyptic number.

78716190 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78716190 is an abundant number, since it is smaller than the sum of its proper divisors (137191650).

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

78716190 is a wasteful number, since it uses less digits than its factorization.

78716190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374856.

The product of its (nonzero) digits is 21168, while the sum is 39.

The square root of 78716190 is about 8872.2144924478. The cubic root of 78716190 is about 428.5695934842.

The spelling of 78716190 in words is "seventy-eight million, seven hundred sixteen thousand, one hundred ninety".