978234312 has 64 divisors (see below), whose sum is σ = 2724710400. Its totient is φ = 290123840.

The previous prime is 978234311. The next prime is 978234329. The reversal of 978234312 is 213432879.

It is a super-2 number, since 2×978234312² = 1913884738348226688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (978234311) 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, 27012 + ... + 51827.

It is an arithmetic number, because the mean of its divisors is an integer number (42573600).

Almost surely, 2^978234312 is an apocalyptic number.

It is an amenable number.

978234312 is an abundant number, since it is smaller than the sum of its proper divisors (1746476088).

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

978234312 is a wasteful number, since it uses less digits than its factorization.

978234312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78906 (or 78902 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 978234312 is about 31276.7375536516. The cubic root of 978234312 is about 992.6914864225.

The spelling of 978234312 in words is "nine hundred seventy-eight million, two hundred thirty-four thousand, three hundred twelve".