523320460 has 48 divisors (see below), whose sum is σ = 1186226496. Its totient is φ = 192782592.

The previous prime is 523320437. The next prime is 523320461. The reversal of 523320460 is 64023325.

It is a happy number.

It is a super-2 number, since 2×523320460² = 547728607709223200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (523320461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124554 + ... + 128686.

It is an arithmetic number, because the mean of its divisors is an integer number (24713052).

Almost surely, 2^523320460 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523320460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (593113248).

523320460 is an abundant number, since it is smaller than the sum of its proper divisors (662906036).

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

523320460 is a wasteful number, since it uses less digits than its factorization.

523320460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4642 (or 4640 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 523320460 is about 22876.1985478357. The cubic root of 523320460 is about 805.8531443532.

Adding to 523320460 its reverse (64023325), we get a palindrome (587343785).

The spelling of 523320460 in words is "five hundred twenty-three million, three hundred twenty thousand, four hundred sixty".