78630338 has 16 divisors (see below), whose sum is σ = 125047800. Its totient is φ = 36953856.

The previous prime is 78630317. The next prime is 78630373. The reversal of 78630338 is 83303687.

It can be written as a sum of positive squares in 4 ways, for example, as 77563249 + 1067089 = 8807^2 + 1033^2 .

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, 49988 + ... + 51536.

Almost surely, 2^78630338 is an apocalyptic number.

78630338 is a deficient number, since it is larger than the sum of its proper divisors (46417462).

78630338 is a wasteful number, since it uses less digits than its factorization.

78630338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 78630338 is about 8867.3749215876. The cubic root of 78630338 is about 428.4137299904.

The spelling of 78630338 in words is "seventy-eight million, six hundred thirty thousand, three hundred thirty-eight".