1305533972 has 48 divisors (see below), whose sum is σ = 2491706448. Its totient is φ = 596090880.

The previous prime is 1305533923. The next prime is 1305534019. The reversal of 1305533972 is 2793355031.

It can be written as a sum of positive squares in 8 ways, for example, as 23464336 + 1282069636 = 4844^2 + 35806^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 548048 + ... + 550424.

It is an arithmetic number, because the mean of its divisors is an integer number (51910551).

Almost surely, 2^1305533972 is an apocalyptic number.

It is an amenable number.

1305533972 is a deficient number, since it is larger than the sum of its proper divisors (1186172476).

1305533972 is a wasteful number, since it uses less digits than its factorization.

1305533972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636 (or 2634 counting only the distinct ones).

The product of its (nonzero) digits is 85050, while the sum is 38.

The square root of 1305533972 is about 36132.1736406765. The cubic root of 1305533972 is about 1092.9393414398.

The spelling of 1305533972 in words is "one billion, three hundred five million, five hundred thirty-three thousand, nine hundred seventy-two".