520191340 has 24 divisors (see below), whose sum is σ = 1092847392. Its totient is φ = 207991680.

The previous prime is 520191337. The next prime is 520191349. The reversal of 520191340 is 43191025.

It is not an unprimeable number, because it can be changed into a prime (520191349) 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, 73560 + ... + 80320.

It is an arithmetic number, because the mean of its divisors is an integer number (45535308).

Almost surely, 2^520191340 is an apocalyptic number.

It is an amenable number.

520191340 is an abundant number, since it is smaller than the sum of its proper divisors (572656052).

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

520191340 is a wasteful number, since it uses less digits than its factorization.

520191340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10617 (or 10615 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 520191340 is about 22807.7035231520. The cubic root of 520191340 is about 804.2437711185.

The spelling of 520191340 in words is "five hundred twenty million, one hundred ninety-one thousand, three hundred forty".