978238912 has 28 divisors (see below), whose sum is σ = 2218507120. Its totient is φ = 419245056.

The previous prime is 978238879. The next prime is 978238931. The reversal of 978238912 is 219832879.

It is a tau number, because it is divible by the number of its divisors (28).

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, 1091337 + ... + 1092232.

Almost surely, 2^978238912 is an apocalyptic number.

It is an amenable number.

978238912 is an abundant number, since it is smaller than the sum of its proper divisors (1240268208).

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

978238912 is a wasteful number, since it uses less digits than its factorization.

978238912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183588 (or 2183578 counting only the distinct ones).

The product of its digits is 435456, while the sum is 49.

The square root of 978238912 is about 31276.8110906467. The cubic root of 978238912 is about 992.6930424143.

The spelling of 978238912 in words is "nine hundred seventy-eight million, two hundred thirty-eight thousand, nine hundred twelve".