1253303220 has 96 divisors (see below), whose sum is σ = 3881420928. Its totient is φ = 300160512.

The previous prime is 1253303209. The next prime is 1253303231. The reversal of 1253303220 is 223033521.

It is an interprime number because it is at equal distance from previous prime (1253303209) and next prime (1253303231).

It is a super-2 number, since 2×1253303220² = 3141537922524736800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7147 + ... + 50573.

It is an arithmetic number, because the mean of its divisors is an integer number (40431468).

Almost surely, 2^1253303220 is an apocalyptic number.

1253303220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1253303220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1940710464).

1253303220 is an abundant number, since it is smaller than the sum of its proper divisors (2628117708).

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

1253303220 is a wasteful number, since it uses less digits than its factorization.

1253303220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43489 (or 43487 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 1253303220 is about 35402.0228235619. The cubic root of 1253303220 is about 1078.1653866492.

Adding to 1253303220 its reverse (223033521), we get a palindrome (1476336741).

The spelling of 1253303220 in words is "one billion, two hundred fifty-three million, three hundred three thousand, two hundred twenty".