78503873 has 8 divisors (see below), whose sum is σ = 92613120. Its totient is φ = 65118240.

The previous prime is 78503837. The next prime is 78503881. The reversal of 78503873 is 37830587.

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

It is a cyclic number.

It is not a de Polignac number, because 78503873 - 2⁶ = 78503809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78503873.

It is not an unprimeable number, because it can be changed into a prime (78503273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180668 + ... + 181101.

It is an arithmetic number, because the mean of its divisors is an integer number (11576640).

Almost surely, 2^78503873 is an apocalyptic number.

It is an amenable number.

78503873 is a deficient number, since it is larger than the sum of its proper divisors (14109247).

78503873 is a wasteful number, since it uses less digits than its factorization.

78503873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361807.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 78503873 is about 8860.2411366734. The cubic root of 78503873 is about 428.1839271935.

The spelling of 78503873 in words is "seventy-eight million, five hundred three thousand, eight hundred seventy-three".