978488 has 32 divisors (see below), whose sum is σ = 2129760. Its totient is φ = 412800.

The previous prime is 978479. The next prime is 978491. The reversal of 978488 is 884879.

It is a happy number.

It is a super-2 number, since 2×978488² = 1914877532288, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5570 + ... + 5742.

It is an arithmetic number, because the mean of its divisors is an integer number (66555).

2⁹⁷⁸⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 978488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1064880).

978488 is an abundant number, since it is smaller than the sum of its proper divisors (1151272).

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

978488 is a wasteful number, since it uses less digits than its factorization.

978488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 283 counting only the distinct ones).

The product of its digits is 129024, while the sum is 44.

The square root of 978488 is about 989.1855235496. The cubic root of 978488 is about 99.2777291411.

The spelling of 978488 in words is "nine hundred seventy-eight thousand, four hundred eighty-eight".