78750426 has 32 divisors (see below), whose sum is σ = 167902848. Its totient is φ = 24537600.

The previous prime is 78750403. The next prime is 78750437. The reversal of 78750426 is 62405787.

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 15 ways as a sum of consecutive naturals, for example, 12846 + ... + 17958.

It is an arithmetic number, because the mean of its divisors is an integer number (5246964).

Almost surely, 2^78750426 is an apocalyptic number.

78750426 is an abundant number, since it is smaller than the sum of its proper divisors (89152422).

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

78750426 is a wasteful number, since it uses less digits than its factorization.

78750426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5286.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 78750426 is about 8874.1436769978. The cubic root of 78750426 is about 428.6317170107.

The spelling of 78750426 in words is "seventy-eight million, seven hundred fifty thousand, four hundred twenty-six".