728587878 has 8 divisors (see below), whose sum is σ = 1457175768. Its totient is φ = 242862624.

The previous prime is 728587877. The next prime is 728587879. The reversal of 728587878 is 878785827.

It is an interprime number because it is at equal distance from previous prime (728587877) and next prime (728587879).

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

728587878 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728587877) 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, 60715651 + ... + 60715662.

It is an arithmetic number, because the mean of its divisors is an integer number (182146971).

Almost surely, 2^728587878 is an apocalyptic number.

728587878 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

728587878 is a wasteful number, since it uses less digits than its factorization.

728587878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121431318.

The product of its digits is 14049280, while the sum is 60.

The square root of 728587878 is about 26992.3670321815. The cubic root of 728587878 is about 899.8303704998.

The spelling of 728587878 in words is "seven hundred twenty-eight million, five hundred eighty-seven thousand, eight hundred seventy-eight".