78182456 has 48 divisors (see below), whose sum is σ = 170644320. Its totient is φ = 33440000.

The previous prime is 78182453. The next prime is 78182477. The reversal of 78182456 is 65428187.

It is a super-2 number, since 2×78182456² = 12224992852383872, which contains 22 as substring.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78182453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14081 + ... + 18831.

It is an arithmetic number, because the mean of its divisors is an integer number (3555090).

Almost surely, 2^78182456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78182456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85322160).

78182456 is an abundant number, since it is smaller than the sum of its proper divisors (92461864).

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

78182456 is a wasteful number, since it uses less digits than its factorization.

78182456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4796 (or 4781 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 78182456 is about 8842.0843696495. The cubic root of 78182456 is about 427.5987592587.

The spelling of 78182456 in words is "seventy-eight million, one hundred eighty-two thousand, four hundred fifty-six".