978447198 has 32 divisors (see below), whose sum is σ = 2035262592. Its totient is φ = 313336800.

The previous prime is 978447193. The next prime is 978447263. The reversal of 978447198 is 891744879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978447191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15348 + ... + 46823.

It is an arithmetic number, because the mean of its divisors is an integer number (63601956).

Almost surely, 2^978447198 is an apocalyptic number.

978447198 is an abundant number, since it is smaller than the sum of its proper divisors (1056815394).

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

978447198 is a wasteful number, since it uses less digits than its factorization.

978447198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62280.

The product of its digits is 4064256, while the sum is 57.

The square root of 978447198 is about 31280.1406326762. The cubic root of 978447198 is about 992.7634919359.

The spelling of 978447198 in words is "nine hundred seventy-eight million, four hundred forty-seven thousand, one hundred ninety-eight".