7512233220 has 144 divisors (see below), whose sum is σ = 23841941760. Its totient is φ = 1985389056.

The previous prime is 7512233219. The next prime is 7512233227. The reversal of 7512233220 is 223322157.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (7512233227) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 542341 + ... + 556019.

It is an arithmetic number, because the mean of its divisors is an integer number (165569040).

Almost surely, 2^7512233220 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 7512233220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11920970880).

7512233220 is an abundant number, since it is smaller than the sum of its proper divisors (16329708540).

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

7512233220 is a wasteful number, since it uses less digits than its factorization.

7512233220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13816 (or 13802 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 7512233220 is about 86673.1401300311. The cubic root of 7512233220 is about 1958.4974966330.

Adding to 7512233220 its reverse (223322157), we get a palindrome (7735555377).

The spelling of 7512233220 in words is "seven billion, five hundred twelve million, two hundred thirty-three thousand, two hundred twenty".