78088426 has 16 divisors (see below), whose sum is σ = 129553704. Its totient is φ = 35066304.

The previous prime is 78088421. The next prime is 78088457. The reversal of 78088426 is 62488087.

It can be written as a sum of positive squares in 4 ways, for example, as 60824401 + 17264025 = 7799^2 + 4155^2 .

It is not an unprimeable number, because it can be changed into a prime (78088421) by changing a digit.

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, 39625 + ... + 41548.

Almost surely, 2^78088426 is an apocalyptic number.

78088426 is a deficient number, since it is larger than the sum of its proper divisors (51465278).

78088426 is a wasteful number, since it uses less digits than its factorization.

78088426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81225.

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 78088426 is about 8836.7655847601. The cubic root of 78088426 is about 427.4272662188.

The spelling of 78088426 in words is "seventy-eight million, eighty-eight thousand, four hundred twenty-six".