52320312 has 96 divisors (see below), whose sum is σ = 159644160. Its totient is φ = 15336000.

The previous prime is 52320311. The next prime is 52320347. The reversal of 52320312 is 21302325.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52320311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23487 + ... + 25617.

It is an arithmetic number, because the mean of its divisors is an integer number (1662960).

Almost surely, 2^52320312 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 52320312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79822080).

52320312 is an abundant number, since it is smaller than the sum of its proper divisors (107323848).

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

52320312 is a wasteful number, since it uses less digits than its factorization.

52320312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185 (or 2178 counting only the distinct ones).

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

The square root of 52320312 is about 7233.2780950272. The cubic root of 52320312 is about 374.0159372468.

Adding to 52320312 its reverse (21302325), we get a palindrome (73622637).

The spelling of 52320312 in words is "fifty-two million, three hundred twenty thousand, three hundred twelve".