988578 has 16 divisors (see below), whose sum is σ = 2196960. Its totient is φ = 329508.

The previous prime is 988577. The next prime is 988579. The reversal of 988578 is 875889.

988578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (988577) and next prime (988579).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 988578.

It is not an unprimeable number, because it can be changed into a prime (988571) 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, 9100 + ... + 9207.

It is an arithmetic number, because the mean of its divisors is an integer number (137310).

2⁹⁸⁸⁵⁷⁸ is an apocalyptic number.

988578 is an abundant number, since it is smaller than the sum of its proper divisors (1208382).

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

988578 is a wasteful number, since it uses less digits than its factorization.

988578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18318 (or 18312 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 988578 is about 994.2725984357. The cubic root of 988578 is about 99.6178078189.

The spelling of 988578 in words is "nine hundred eighty-eight thousand, five hundred seventy-eight".