78790738 has 32 divisors (see below), whose sum is σ = 133358400. Its totient is φ = 34660416.

The previous prime is 78790717. The next prime is 78790763. The reversal of 78790738 is 83709787.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 78790691 and 78790700.

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, 61953 + ... + 63211.

It is an arithmetic number, because the mean of its divisors is an integer number (4167450).

Almost surely, 2^78790738 is an apocalyptic number.

78790738 is a deficient number, since it is larger than the sum of its proper divisors (54567662).

78790738 is a wasteful number, since it uses less digits than its factorization.

78790738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386.

The product of its (nonzero) digits is 592704, while the sum is 49.

The square root of 78790738 is about 8876.4147041472. The cubic root of 78790738 is about 428.7048427708.

The spelling of 78790738 in words is "seventy-eight million, seven hundred ninety thousand, seven hundred thirty-eight".