520851340 has 24 divisors (see below), whose sum is σ = 1098573840. Its totient is φ = 207428928.

The previous prime is 520851337. The next prime is 520851349. The reversal of 520851340 is 43158025.

It is a super-2 number, since 2×520851340² = 542572236759591200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 520851299 and 520851308.

It is not an unprimeable number, because it can be changed into a prime (520851349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52282 + ... + 61441.

It is an arithmetic number, because the mean of its divisors is an integer number (45773910).

Almost surely, 2^520851340 is an apocalyptic number.

It is an amenable number.

520851340 is an abundant number, since it is smaller than the sum of its proper divisors (577722500).

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

520851340 is a wasteful number, since it uses less digits than its factorization.

520851340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113961 (or 113959 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 520851340 is about 22822.1677322729. The cubic root of 520851340 is about 804.5837591954.

The spelling of 520851340 in words is "five hundred twenty million, eight hundred fifty-one thousand, three hundred forty".