978347040 has 192 divisors, whose sum is σ = 3390750720. Its totient is φ = 235146240.

The previous prime is 978347017. The next prime is 978347077. The reversal of 978347040 is 40743879.

It is a junction number, because it is equal to n+sod(n) for n = 978346983 and 978347001.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 669831 + ... + 671289.

It is an arithmetic number, because the mean of its divisors is an integer number (17660160).

Almost surely, 2^978347040 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 978347040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1695375360).

978347040 is an abundant number, since it is smaller than the sum of its proper divisors (2412403680).

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

978347040 is a wasteful number, since it uses less digits than its factorization.

978347040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615 (or 1607 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 978347040 is about 31278.5396078525. The cubic root of 978347040 is about 992.7296162878.

The spelling of 978347040 in words is "nine hundred seventy-eight million, three hundred forty-seven thousand, forty".