1307530252 has 24 divisors (see below), whose sum is σ = 2615863040. Its totient is φ = 560198160.

The previous prime is 1307530247. The next prime is 1307530253. The reversal of 1307530252 is 2520357031.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1307530252.

It is not an unprimeable number, because it can be changed into a prime (1307530253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135649 + ... + 144967.

Almost surely, 2^1307530252 is an apocalyptic number.

It is an amenable number.

1307530252 is an abundant number, since it is smaller than the sum of its proper divisors (1308332788).

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

1307530252 is a wasteful number, since it uses less digits than its factorization.

1307530252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14341 (or 14339 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 1307530252 is about 36159.7877759259. The cubic root of 1307530252 is about 1093.4961255797.

Adding to 1307530252 its reverse (2520357031), we get a palindrome (3827887283).

The spelling of 1307530252 in words is "one billion, three hundred seven million, five hundred thirty thousand, two hundred fifty-two".