78985748 has 6 divisors (see below), whose sum is σ = 138225066. Its totient is φ = 39492872.

The previous prime is 78985693. The next prime is 78985759. The reversal of 78985748 is 84758987.

It can be written as a sum of positive squares in only one way, i.e., 59783824 + 19201924 = 7732^2 + 4382^2 .

It is a junction number, because it is equal to n+sod(n) for n = 78985693 and 78985702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9873215 + ... + 9873222.

It is an arithmetic number, because the mean of its divisors is an integer number (23037511).

Almost surely, 2^78985748 is an apocalyptic number.

It is an amenable number.

78985748 is a deficient number, since it is larger than the sum of its proper divisors (59239318).

78985748 is a wasteful number, since it uses less digits than its factorization.

78985748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19746441 (or 19746439 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 56.

The square root of 78985748 is about 8887.3926435147. The cubic root of 78985748 is about 429.0582381728.

The spelling of 78985748 in words is "seventy-eight million, nine hundred eighty-five thousand, seven hundred forty-eight".