78347088 has 80 divisors (see below), whose sum is σ = 227763200. Its totient is φ = 26104032.

The previous prime is 78347041. The next prime is 78347123. The reversal of 78347088 is 88074387.

It is a super-2 number, since 2×78347088² = 12276532396159488, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33873 + ... + 36111.

It is an arithmetic number, because the mean of its divisors is an integer number (2847040).

Almost surely, 2^78347088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78347088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113881600).

78347088 is an abundant number, since it is smaller than the sum of its proper divisors (149416112).

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

78347088 is an equidigital number, since it uses as much as digits as its factorization.

78347088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2268 (or 2244 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 78347088 is about 8851.3890435344. The cubic root of 78347088 is about 427.8986862416.

The spelling of 78347088 in words is "seventy-eight million, three hundred forty-seven thousand, eighty-eight".