520122330 has 128 divisors (see below), whose sum is σ = 1707148800. Its totient is φ = 109734912.

The previous prime is 520122329. The next prime is 520122349. The reversal of 520122330 is 33221025.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13986 + ... + 35154.

It is an arithmetic number, because the mean of its divisors is an integer number (13337100).

Almost surely, 2^520122330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520122330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (853574400).

520122330 is an abundant number, since it is smaller than the sum of its proper divisors (1187026470).

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

520122330 is a wasteful number, since it uses less digits than its factorization.

520122330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21205 (or 21199 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 520122330 is about 22806.1906069383. The cubic root of 520122330 is about 804.2082051559.

Adding to 520122330 its reverse (33221025), we get a palindrome (553343355).

The spelling of 520122330 in words is "five hundred twenty million, one hundred twenty-two thousand, three hundred thirty".