52732220 has 48 divisors (see below), whose sum is σ = 117465600. Its totient is φ = 19828800.

The previous prime is 52732219. The next prime is 52732223. The reversal of 52732220 is 2223725.

It is a super-2 number, since 2×52732220² = 5561374052256800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52732223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56921 + ... + 57839.

It is an arithmetic number, because the mean of its divisors is an integer number (2447200).

Almost surely, 2^52732220 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 52732220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58732800).

52732220 is an abundant number, since it is smaller than the sum of its proper divisors (64733380).

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

52732220 is a wasteful number, since it uses less digits than its factorization.

52732220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098 (or 1096 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 52732220 is about 7261.6953943277. The cubic root of 52732220 is about 374.9948917823.

Adding to 52732220 its reverse (2223725), we get a palindrome (54955945).

The spelling of 52732220 in words is "fifty-two million, seven hundred thirty-two thousand, two hundred twenty".