1253347284 has 72 divisors (see below), whose sum is σ = 3408813408. Its totient is φ = 357376320.

The previous prime is 1253347243. The next prime is 1253347289. The reversal of 1253347284 is 4827433521.

1253347284 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253347289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 333882 + ... + 337614.

Almost surely, 2^1253347284 is an apocalyptic number.

1253347284 is a gapful number since it is divisible by the number (14) 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 1253347284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1704406704).

1253347284 is an abundant number, since it is smaller than the sum of its proper divisors (2155466124).

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

1253347284 is a wasteful number, since it uses less digits than its factorization.

1253347284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325 (or 4316 counting only the distinct ones).

The product of its digits is 161280, while the sum is 39.

The square root of 1253347284 is about 35402.6451554118. The cubic root of 1253347284 is about 1078.1780219855.

The spelling of 1253347284 in words is "one billion, two hundred fifty-three million, three hundred forty-seven thousand, two hundred eighty-four".