78163426 has 8 divisors (see below), whose sum is σ = 127903824. Its totient is φ = 35528820.

The previous prime is 78163409. The next prime is 78163427. The reversal of 78163426 is 62436187.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78163426² = 12219042328114952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78163427) 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 3 ways as a sum of consecutive naturals, for example, 1776420 + ... + 1776463.

It is an arithmetic number, because the mean of its divisors is an integer number (15987978).

Almost surely, 2^78163426 is an apocalyptic number.

78163426 is a deficient number, since it is larger than the sum of its proper divisors (49740398).

78163426 is a wasteful number, since it uses less digits than its factorization.

78163426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3552896.

The product of its digits is 48384, while the sum is 37.

The square root of 78163426 is about 8841.0082004260. The cubic root of 78163426 is about 427.5640632194.

The spelling of 78163426 in words is "seventy-eight million, one hundred sixty-three thousand, four hundred twenty-six".