78266146 has 8 divisors (see below), whose sum is σ = 134170560. Its totient is φ = 33542628.

The previous prime is 78266143. The next prime is 78266159. The reversal of 78266146 is 64166287.

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

It is a super-2 number, since 2×78266146² = 12251179219386632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78266099 and 78266108.

It is not an unprimeable number, because it can be changed into a prime (78266143) 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, 2795206 + ... + 2795233.

It is an arithmetic number, because the mean of its divisors is an integer number (16771320).

Almost surely, 2^78266146 is an apocalyptic number.

78266146 is a deficient number, since it is larger than the sum of its proper divisors (55904414).

78266146 is a wasteful number, since it uses less digits than its factorization.

78266146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5590448.

The product of its digits is 96768, while the sum is 40.

The square root of 78266146 is about 8846.8155852827. The cubic root of 78266146 is about 427.7512784669.

The spelling of 78266146 in words is "seventy-eight million, two hundred sixty-six thousand, one hundred forty-six".