520620104 has 32 divisors (see below), whose sum is σ = 1034839800. Its totient is φ = 244700160.

The previous prime is 520620103. The next prime is 520620109. The reversal of 520620104 is 401026025.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 519931204 + 688900 = 22802^2 + 830^2 .

It is a super-3 number, since 3×520620104³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (520620103) 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, 143594 + ... + 147174.

Almost surely, 2^520620104 is an apocalyptic number.

It is an amenable number.

520620104 is a deficient number, since it is larger than the sum of its proper divisors (514219696).

520620104 is a wasteful number, since it uses less digits than its factorization.

520620104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673 (or 4669 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 520620104 is about 22817.1011305117. The cubic root of 520620104 is about 804.4646745000.

Adding to 520620104 its reverse (401026025), we get a palindrome (921646129).

The spelling of 520620104 in words is "five hundred twenty million, six hundred twenty thousand, one hundred four".