520678000 has 40 divisors (see below), whose sum is σ = 1259004240. Its totient is φ = 208270400.

The previous prime is 520677973. The next prime is 520678021. The reversal of 520678000 is 876025.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×520678000² = 542211159368000000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 520678000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128170 + ... + 132169.

It is an arithmetic number, because the mean of its divisors is an integer number (31475106).

Almost surely, 2^520678000 is an apocalyptic number.

520678000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

520678000 is an abundant number, since it is smaller than the sum of its proper divisors (738326240).

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

520678000 is a wasteful number, since it uses less digits than its factorization.

520678000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260362 (or 260346 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 520678000 is about 22818.3697927788. The cubic root of 520678000 is about 804.4944937867.

The spelling of 520678000 in words is "five hundred twenty million, six hundred seventy-eight thousand".