1253230220 has 48 divisors (see below), whose sum is σ = 2899514016. Its totient is φ = 451200000.

The previous prime is 1253230207. The next prime is 1253230247. The reversal of 1253230220 is 220323521.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1253230192 and 1253230201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5981 + ... + 50420.

It is an arithmetic number, because the mean of its divisors is an integer number (60406542).

Almost surely, 2^1253230220 is an apocalyptic number.

1253230220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253230220 is an abundant number, since it is smaller than the sum of its proper divisors (1646283796).

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

1253230220 is a wasteful number, since it uses less digits than its factorization.

1253230220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56522 (or 56520 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 1253230220 is about 35400.9917940162. The cubic root of 1253230220 is about 1078.1444532736.

Adding to 1253230220 its reverse (220323521), we get a palindrome (1473553741).

The spelling of 1253230220 in words is "one billion, two hundred fifty-three million, two hundred thirty thousand, two hundred twenty".