78757480 has 32 divisors (see below), whose sum is σ = 178347240. Its totient is φ = 31299840.

The previous prime is 78757429. The next prime is 78757499. The reversal of 78757480 is 8475787.

It can be written as a sum of positive squares in 4 ways, for example, as 68657796 + 10099684 = 8286^2 + 3178^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 78757480.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10 + ... + 12550.

Almost surely, 2^78757480 is an apocalyptic number.

It is an amenable number.

78757480 is an abundant number, since it is smaller than the sum of its proper divisors (99589760).

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

78757480 is a wasteful number, since it uses less digits than its factorization.

78757480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12709 (or 12705 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 46.

The square root of 78757480 is about 8874.5411148972. The cubic root of 78757480 is about 428.6445147314.

The spelling of 78757480 in words is "seventy-eight million, seven hundred fifty-seven thousand, four hundred eighty".