520278120 has 128 divisors (see below), whose sum is σ = 1740960000. Its totient is φ = 138205440.

The previous prime is 520278091. The next prime is 520278179. The reversal of 520278120 is 21872025.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 335106 + ... + 336654.

It is an arithmetic number, because the mean of its divisors is an integer number (13601250).

Almost surely, 2^520278120 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 520278120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870480000).

520278120 is an abundant number, since it is smaller than the sum of its proper divisors (1220681880).

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

520278120 is a wasteful number, since it uses less digits than its factorization.

520278120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1880 (or 1870 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 520278120 is about 22809.6058712114. The cubic root of 520278120 is about 804.2884908132.

The spelling of 520278120 in words is "five hundred twenty million, two hundred seventy-eight thousand, one hundred twenty".