78572323 has 4 divisors (see below), whose sum is σ = 79293280. Its totient is φ = 77851368.

The previous prime is 78572311. The next prime is 78572369. The reversal of 78572323 is 32327587.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78572323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78572303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360315 + ... + 360532.

It is an arithmetic number, because the mean of its divisors is an integer number (19823320).

Almost surely, 2^78572323 is an apocalyptic number.

78572323 is a deficient number, since it is larger than the sum of its proper divisors (720957).

78572323 is a wasteful number, since it uses less digits than its factorization.

78572323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720956.

The product of its digits is 70560, while the sum is 37.

The square root of 78572323 is about 8864.1030567114. The cubic root of 78572323 is about 428.3083400592.

The spelling of 78572323 in words is "seventy-eight million, five hundred seventy-two thousand, three hundred twenty-three".