1306239452 has 36 divisors (see below), whose sum is σ = 2661936480. Its totient is φ = 559226304.

The previous prime is 1306239419. The next prime is 1306239479. The reversal of 1306239452 is 2549326031.

It is a super-2 number, since 2×1306239452² = 3412523011922520608, which contains 22 as substring.

It is a congruent number.

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, 218333 + ... + 224235.

It is an arithmetic number, because the mean of its divisors is an integer number (73942680).

Almost surely, 2^1306239452 is an apocalyptic number.

It is an amenable number.

1306239452 is an abundant number, since it is smaller than the sum of its proper divisors (1355697028).

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

1306239452 is a wasteful number, since it uses less digits than its factorization.

1306239452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7050 (or 7041 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 1306239452 is about 36141.9348126245. The cubic root of 1306239452 is about 1093.1361722691.

The spelling of 1306239452 in words is "one billion, three hundred six million, two hundred thirty-nine thousand, four hundred fifty-two".