78445743 has 8 divisors (see below), whose sum is σ = 105673008. Its totient is φ = 51757824.

The previous prime is 78445733. The next prime is 78445753. The reversal of 78445743 is 34754487.

It is an interprime number because it is at equal distance from previous prime (78445733) and next prime (78445753).

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

It is not a de Polignac number, because 78445743 - 2⁵ = 78445711 is a prime.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 78445695 and 78445704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78445733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134496 + ... + 135077.

It is an arithmetic number, because the mean of its divisors is an integer number (13209126).

Almost surely, 2^78445743 is an apocalyptic number.

78445743 is a deficient number, since it is larger than the sum of its proper divisors (27227265).

78445743 is a wasteful number, since it uses less digits than its factorization.

78445743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269673.

The product of its digits is 376320, while the sum is 42.

The square root of 78445743 is about 8856.9601444288. The cubic root of 78445743 is about 428.0782148815.

The spelling of 78445743 in words is "seventy-eight million, four hundred forty-five thousand, seven hundred forty-three".