520341720 has 64 divisors (see below), whose sum is σ = 1562531040. Its totient is φ = 138624000.

The previous prime is 520341677. The next prime is 520341769. The reversal of 520341720 is 27143025.

It is a Cunningham number, because it is equal to 22811²-1.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226980 + ... + 229260.

Almost surely, 2^520341720 is an apocalyptic number.

It is an amenable number.

520341720 is an abundant number, since it is smaller than the sum of its proper divisors (1042189320).

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

520341720 is a wasteful number, since it uses less digits than its factorization.

520341720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4196 (or 4192 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 520341720 is about 22810.9999780808. Note that the first 4 decimals coincide. The cubic root of 520341720 is about 804.3212621727.

Adding to 520341720 its reverse (27143025), we get a palindrome (547484745).

The spelling of 520341720 in words is "five hundred twenty million, three hundred forty-one thousand, seven hundred twenty".