978512 has 20 divisors (see below), whose sum is σ = 1979040. Its totient is φ = 467808.

The previous prime is 978511. The next prime is 978521. The reversal of 978512 is 215879.

It is a nialpdrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 978512.

It is not an unprimeable number, because it can be changed into a prime (978511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962 + ... + 1697.

It is an arithmetic number, because the mean of its divisors is an integer number (98952).

2⁹⁷⁸⁵¹² is an apocalyptic number.

978512 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

978512 is an abundant number, since it is smaller than the sum of its proper divisors (1000528).

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

978512 is a wasteful number, since it uses less digits than its factorization.

978512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690 (or 2684 counting only the distinct ones).

The product of its digits is 5040, while the sum is 32.

The square root of 978512 is about 989.1976546677. The cubic root of 978512 is about 99.2785408172.

The spelling of 978512 in words is "nine hundred seventy-eight thousand, five hundred twelve".