520432140 has 48 divisors (see below), whose sum is σ = 1460158560. Its totient is φ = 138501120.

The previous prime is 520432103. The next prime is 520432141. The reversal of 520432140 is 41234025.

It is a super-2 number, since 2×520432140² = 541699224689959200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (520432141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22020 + ... + 39060.

It is an arithmetic number, because the mean of its divisors is an integer number (30419970).

Almost surely, 2^520432140 is an apocalyptic number.

It is an amenable number.

520432140 is an abundant number, since it is smaller than the sum of its proper divisors (939726420).

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

520432140 is a wasteful number, since it uses less digits than its factorization.

520432140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17562 (or 17560 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 520432140 is about 22812.9818305280. The cubic root of 520432140 is about 804.3678485559.

Adding to 520432140 its reverse (41234025), we get a palindrome (561666165).

The spelling of 520432140 in words is "five hundred twenty million, four hundred thirty-two thousand, one hundred forty".