1305747472 has 10 divisors (see below), whose sum is σ = 2529885758. Its totient is φ = 652873728.

The previous prime is 1305747463. The next prime is 1305747473. The reversal of 1305747472 is 2747475031.

It can be written as a sum of positive squares in only one way, i.e., 891380736 + 414366736 = 29856^2 + 20356^2 .

It is not an unprimeable number, because it can be changed into a prime (1305747473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40804593 + ... + 40804624.

Almost surely, 2^1305747472 is an apocalyptic number.

It is an amenable number.

1305747472 is a deficient number, since it is larger than the sum of its proper divisors (1224138286).

1305747472 is an equidigital number, since it uses as much as digits as its factorization.

1305747472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81609225 (or 81609219 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 40.

The square root of 1305747472 is about 36135.1279505137. The cubic root of 1305747472 is about 1092.9989159985.

The spelling of 1305747472 in words is "one billion, three hundred five million, seven hundred forty-seven thousand, four hundred seventy-two".