78516744 has 64 divisors (see below), whose sum is σ = 211818240. Its totient is φ = 24161280.

The previous prime is 78516719. The next prime is 78516749. The reversal of 78516744 is 44761587.

It is a junction number, because it is equal to n+sod(n) for n = 78516696 and 78516705.

It is not an unprimeable number, because it can be changed into a prime (78516749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19809 + ... + 23439.

It is an arithmetic number, because the mean of its divisors is an integer number (3309660).

Almost surely, 2^78516744 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 78516744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105909120).

78516744 is an abundant number, since it is smaller than the sum of its proper divisors (133301496).

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

78516744 is a wasteful number, since it uses less digits than its factorization.

78516744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710 (or 3706 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 78516744 is about 8860.9674415382. The cubic root of 78516744 is about 428.2073266937.

The spelling of 78516744 in words is "seventy-eight million, five hundred sixteen thousand, seven hundred forty-four".