78470854 has 32 divisors (see below), whose sum is σ = 149760000. Its totient is φ = 30570120.

The previous prime is 78470851. The next prime is 78470863. The reversal of 78470854 is 45807487.

It is a self number, because there is not a number n which added to its sum of digits gives 78470854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78470851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2347 + ... + 12745.

It is an arithmetic number, because the mean of its divisors is an integer number (4680000).

Almost surely, 2^78470854 is an apocalyptic number.

78470854 is a deficient number, since it is larger than the sum of its proper divisors (71289146).

78470854 is a wasteful number, since it uses less digits than its factorization.

78470854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10433 (or 10419 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 43.

The square root of 78470854 is about 8858.3776166971. The cubic root of 78470854 is about 428.1238868957.

The spelling of 78470854 in words is "seventy-eight million, four hundred seventy thousand, eight hundred fifty-four".