78343256 has 16 divisors (see below), whose sum is σ = 147193200. Its totient is φ = 39091744.

The previous prime is 78343253. The next prime is 78343277. The reversal of 78343256 is 65234387.

It is a super-2 number, since 2×78343256² = 12275331521363072, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78343253) 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, 5711 + ... + 13758.

It is an arithmetic number, because the mean of its divisors is an integer number (9199575).

Almost surely, 2^78343256 is an apocalyptic number.

It is an amenable number.

78343256 is a deficient number, since it is larger than the sum of its proper divisors (68849944).

78343256 is a wasteful number, since it uses less digits than its factorization.

78343256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19978 (or 19974 counting only the distinct ones).

The product of its digits is 120960, while the sum is 38.

The square root of 78343256 is about 8851.1725776871. The cubic root of 78343256 is about 427.8917098730.

The spelling of 78343256 in words is "seventy-eight million, three hundred forty-three thousand, two hundred fifty-six".