520402623 has 32 divisors (see below), whose sum is σ = 825624576. Its totient is φ = 288296448.

The previous prime is 520402607. The next prime is 520402633. The reversal of 520402623 is 326204025.

It is not a de Polignac number, because 520402623 - 2⁴ = 520402607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520402593 and 520402602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520402633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1815 + ... + 32312.

It is an arithmetic number, because the mean of its divisors is an integer number (25800768).

Almost surely, 2^520402623 is an apocalyptic number.

520402623 is a deficient number, since it is larger than the sum of its proper divisors (305221953).

520402623 is a wasteful number, since it uses less digits than its factorization.

520402623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34183.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 520402623 is about 22812.3348870737. The cubic root of 520402623 is about 804.3526413381.

Adding to 520402623 its reverse (326204025), we get a palindrome (846606648).

The spelling of 520402623 in words is "five hundred twenty million, four hundred two thousand, six hundred twenty-three".