78423576 has 64 divisors (see below), whose sum is σ = 244442880. Its totient is φ = 20369280.

The previous prime is 78423559. The next prime is 78423593. The reversal of 78423576 is 67532487.

It is an interprime number because it is at equal distance from previous prime (78423559) and next prime (78423593).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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, 19371 + ... + 23066.

It is an arithmetic number, because the mean of its divisors is an integer number (3819420).

Almost surely, 2^78423576 is an apocalyptic number.

It is an amenable number.

78423576 is an abundant number, since it is smaller than the sum of its proper divisors (166019304).

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

78423576 is a wasteful number, since it uses less digits than its factorization.

78423576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42464 (or 42460 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 78423576 is about 8855.7086672948. The cubic root of 78423576 is about 428.0378893292.

The spelling of 78423576 in words is "seventy-eight million, four hundred twenty-three thousand, five hundred seventy-six".