78475738 has 32 divisors (see below), whose sum is σ = 136002240. Its totient is φ = 33586560.

The previous prime is 78475729. The next prime is 78475777. The reversal of 78475738 is 83757487.

It is a junction number, because it is equal to n+sod(n) for n = 78475691 and 78475700.

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, 81870 + ... + 82822.

It is an arithmetic number, because the mean of its divisors is an integer number (4250070).

Almost surely, 2^78475738 is an apocalyptic number.

78475738 is a deficient number, since it is larger than the sum of its proper divisors (57526502).

78475738 is a wasteful number, since it uses less digits than its factorization.

78475738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182.

The product of its digits is 1317120, while the sum is 49.

The square root of 78475738 is about 8858.6532836544. The cubic root of 78475738 is about 428.1327688078.

The spelling of 78475738 in words is "seventy-eight million, four hundred seventy-five thousand, seven hundred thirty-eight".