78195423 has 32 divisors (see below), whose sum is σ = 113541120. Its totient is φ = 47725920.

The previous prime is 78195421. The next prime is 78195433. The reversal of 78195423 is 32459187.

It is not a de Polignac number, because 78195423 - 2¹ = 78195421 is a prime.

It is a super-2 number, since 2×78195423² = 12229048356297858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78195421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297190 + ... + 297452.

It is an arithmetic number, because the mean of its divisors is an integer number (3548160).

Almost surely, 2^78195423 is an apocalyptic number.

78195423 is a deficient number, since it is larger than the sum of its proper divisors (35345697).

78195423 is a wasteful number, since it uses less digits than its factorization.

78195423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459.

The product of its digits is 60480, while the sum is 39.

The square root of 78195423 is about 8842.8175939573. The cubic root of 78195423 is about 427.6223978382.

The spelling of 78195423 in words is "seventy-eight million, one hundred ninety-five thousand, four hundred twenty-three".