1452303220 has 12 divisors (see below), whose sum is σ = 3049836804. Its totient is φ = 580921280.

The previous prime is 1452303187. The next prime is 1452303227. The reversal of 1452303220 is 223032541.

It can be written as a sum of positive squares in 2 ways, for example, as 149670756 + 1302632464 = 12234^2 + 36092^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1452303191 and 1452303200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1452303227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36307561 + ... + 36307600.

It is an arithmetic number, because the mean of its divisors is an integer number (254153067).

Almost surely, 2^1452303220 is an apocalyptic number.

1452303220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1452303220 is an abundant number, since it is smaller than the sum of its proper divisors (1597533584).

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

1452303220 is a wasteful number, since it uses less digits than its factorization.

1452303220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72615170 (or 72615168 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1452303220 is about 38109.0962894687. The cubic root of 1452303220 is about 1132.4501668219.

Adding to 1452303220 its reverse (223032541), we get a palindrome (1675335761).

The spelling of 1452303220 in words is "one billion, four hundred fifty-two million, three hundred three thousand, two hundred twenty".