678023892 has 192 divisors, whose sum is σ = 2277990400. Its totient is φ = 169361280.

The previous prime is 678023881. The next prime is 678023921. The reversal of 678023892 is 298320876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 184917 + ... + 188547.

Almost surely, 2^678023892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678023892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1138995200).

678023892 is an abundant number, since it is smaller than the sum of its proper divisors (1599966508).

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

678023892 is a wasteful number, since it uses less digits than its factorization.

678023892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3683 (or 3675 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 678023892 is about 26038.8919119075. The cubic root of 678023892 is about 878.5132834129.

The spelling of 678023892 in words is "six hundred seventy-eight million, twenty-three thousand, eight hundred ninety-two".