520233388 has 24 divisors (see below), whose sum is σ = 971015472. Its totient is φ = 243024384.

The previous prime is 520233383. The next prime is 520233403. The reversal of 520233388 is 883332025.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (520233383) 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, 18606 + ... + 37237.

It is an arithmetic number, because the mean of its divisors is an integer number (40458978).

Almost surely, 2^520233388 is an apocalyptic number.

It is an amenable number.

520233388 is a deficient number, since it is larger than the sum of its proper divisors (450782084).

520233388 is a wasteful number, since it uses less digits than its factorization.

520233388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56001 (or 55999 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 520233388 is about 22808.6252983383. The cubic root of 520233388 is about 804.2654400240.

The spelling of 520233388 in words is "five hundred twenty million, two hundred thirty-three thousand, three hundred eighty-eight".