230520402 has 72 divisors (see below), whose sum is σ = 599818752. Its totient is φ = 63730800.

The previous prime is 230520361. The next prime is 230520419. The reversal of 230520402 is 204025032.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23127 + ... + 31557.

It is an arithmetic number, because the mean of its divisors is an integer number (8330816).

Almost surely, 2^230520402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230520402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299909376).

230520402 is an abundant number, since it is smaller than the sum of its proper divisors (369298350).

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

230520402 is a wasteful number, since it uses less digits than its factorization.

230520402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8484 (or 8474 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 230520402 is about 15182.8983399086. The cubic root of 230520402 is about 613.1543157308.

Adding to 230520402 its reverse (204025032), we get a palindrome (434545434).

The spelling of 230520402 in words is "two hundred thirty million, five hundred twenty thousand, four hundred two".