978323238 has 32 divisors (see below), whose sum is σ = 2183656320. Its totient is φ = 324667080.

The previous prime is 978323183. The next prime is 978323251. The reversal of 978323238 is 832323879.

It is a happy number.

978323238 is a `hidden beast` number, since 97 + 8 + 323 + 238 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 978323193 and 978323202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27648 + ... + 52163.

It is an arithmetic number, because the mean of its divisors is an integer number (68239260).

Almost surely, 2^978323238 is an apocalyptic number.

978323238 is an abundant number, since it is smaller than the sum of its proper divisors (1205333082).

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

978323238 is a wasteful number, since it uses less digits than its factorization.

978323238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80049 (or 80043 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 978323238 is about 31278.1591210225. The cubic root of 978323238 is about 992.7215655856.

The spelling of 978323238 in words is "nine hundred seventy-eight million, three hundred twenty-three thousand, two hundred thirty-eight".