678332528 has 20 divisors (see below), whose sum is σ = 1383441960. Its totient is φ = 321315264.

The previous prime is 678332519. The next prime is 678332539. The reversal of 678332528 is 825233876.

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, 1115375 + ... + 1115982.

It is an arithmetic number, because the mean of its divisors is an integer number (69172098).

Almost surely, 2^678332528 is an apocalyptic number.

It is an amenable number.

678332528 is an abundant number, since it is smaller than the sum of its proper divisors (705109432).

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

678332528 is a wasteful number, since it uses less digits than its factorization.

678332528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231384 (or 2231378 counting only the distinct ones).

The product of its digits is 483840, while the sum is 44.

The square root of 678332528 is about 26044.8176802987. The cubic root of 678332528 is about 878.6465627355.

The spelling of 678332528 in words is "six hundred seventy-eight million, three hundred thirty-two thousand, five hundred twenty-eight".