978228892 has 12 divisors (see below), whose sum is σ = 1812600720. Its totient is φ = 460342976.

The previous prime is 978228883. The next prime is 978228929. The reversal of 978228892 is 298822879.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7192792 + ... + 7192927.

It is an arithmetic number, because the mean of its divisors is an integer number (151050060).

Almost surely, 2^978228892 is an apocalyptic number.

It is an amenable number.

978228892 is a deficient number, since it is larger than the sum of its proper divisors (834371828).

978228892 is a wasteful number, since it uses less digits than its factorization.

978228892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14385740 (or 14385738 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 55.

The square root of 978228892 is about 31276.6509076659. The cubic root of 978228892 is about 992.6896530520.

The spelling of 978228892 in words is "nine hundred seventy-eight million, two hundred twenty-eight thousand, eight hundred ninety-two".