1309152272 has 60 divisors (see below), whose sum is σ = 2673279420. Its totient is φ = 620995584.

The previous prime is 1309152259. The next prime is 1309152281. The reversal of 1309152272 is 2722519031.

It can be written as a sum of positive squares in 2 ways, for example, as 398561296 + 910590976 = 19964^2 + 30176^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1159004 + ... + 1160132.

It is an arithmetic number, because the mean of its divisors is an integer number (44554657).

Almost surely, 2^1309152272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1309152272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1336639710).

1309152272 is an abundant number, since it is smaller than the sum of its proper divisors (1364127148).

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

1309152272 is a wasteful number, since it uses less digits than its factorization.

1309152272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320 (or 1291 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 1309152272 is about 36182.2093300008. The cubic root of 1309152272 is about 1093.9481073882.

The spelling of 1309152272 in words is "one billion, three hundred nine million, one hundred fifty-two thousand, two hundred seventy-two".