78590478 has 16 divisors (see below), whose sum is σ = 159845760. Its totient is φ = 25752696.

The previous prime is 78590453. The next prime is 78590489. The reversal of 78590478 is 87409587.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110650 + ... + 111357.

It is an arithmetic number, because the mean of its divisors is an integer number (9990360).

Almost surely, 2^78590478 is an apocalyptic number.

78590478 is an abundant number, since it is smaller than the sum of its proper divisors (81255282).

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

78590478 is a wasteful number, since it uses less digits than its factorization.

78590478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222071.

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 78590478 is about 8865.1270718473. The cubic root of 78590478 is about 428.3413259707.

The spelling of 78590478 in words is "seventy-eight million, five hundred ninety thousand, four hundred seventy-eight".