78158343 has 16 divisors (see below), whose sum is σ = 110073600. Its totient is φ = 49193280.

The previous prime is 78158329. The next prime is 78158351. The reversal of 78158343 is 34385187.

It is not a de Polignac number, because 78158343 - 2⁶ = 78158279 is a prime.

It is a super-2 number, since 2×78158343² = 12217453161011298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78154343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15523 + ... + 19931.

It is an arithmetic number, because the mean of its divisors is an integer number (6879600).

Almost surely, 2^78158343 is an apocalyptic number.

78158343 is a deficient number, since it is larger than the sum of its proper divisors (31915257).

78158343 is a wasteful number, since it uses less digits than its factorization.

78158343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742.

The product of its digits is 80640, while the sum is 39.

The square root of 78158343 is about 8840.7207285379. The cubic root of 78158343 is about 427.5547947957.

The spelling of 78158343 in words is "seventy-eight million, one hundred fifty-eight thousand, three hundred forty-three".