411640520 has 16 divisors (see below), whose sum is σ = 926191260. Its totient is φ = 164656192.

The previous prime is 411640513. The next prime is 411640547. The reversal of 411640520 is 25046114.

It can be written as a sum of positive squares in 2 ways, for example, as 402483844 + 9156676 = 20062^2 + 3026^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5145467 + ... + 5145546.

Almost surely, 2^411640520 is an apocalyptic number.

411640520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

411640520 is an abundant number, since it is smaller than the sum of its proper divisors (514550740).

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

411640520 is a wasteful number, since it uses less digits than its factorization.

411640520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10291024 (or 10291020 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 411640520 is about 20288.9260435342. The cubic root of 411640520 is about 743.8854074484.

Adding to 411640520 its reverse (25046114), we get a palindrome (436686634).

The spelling of 411640520 in words is "four hundred eleven million, six hundred forty thousand, five hundred twenty".