678028 has 36 divisors (see below), whose sum is σ = 1383480. Its totient is φ = 289536.

The previous prime is 678023. The next prime is 678037. The reversal of 678028 is 820876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11463 + ... + 11521.

It is an arithmetic number, because the mean of its divisors is an integer number (38430).

2⁶⁷⁸⁰²⁸ is an apocalyptic number.

678028 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

678028 is an abundant number, since it is smaller than the sum of its proper divisors (705452).

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

678028 is a wasteful number, since it uses less digits than its factorization.

678028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 678028 is about 823.4245563499. The cubic root of 678028 is about 87.8515057650.

The spelling of 678028 in words is "six hundred seventy-eight thousand, twenty-eight".