978040 has 48 divisors (see below), whose sum is σ = 2565000. Its totient is φ = 334656.

The previous prime is 978037. The next prime is 978041. The reversal of 978040 is 40879.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1711 + ... + 2209.

2⁹⁷⁸⁰⁴⁰ 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 978040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1282500).

978040 is an abundant number, since it is smaller than the sum of its proper divisors (1586960).

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

978040 is a wasteful number, since it uses less digits than its factorization.

978040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 978040 is about 988.9590486972. The cubic root of 978040 is about 99.2625754168.

The spelling of 978040 in words is "nine hundred seventy-eight thousand, forty".