1300781252 has 24 divisors (see below), whose sum is σ = 2355957240. Its totient is φ = 627978240.

The previous prime is 1300781189. The next prime is 1300781311. The reversal of 1300781252 is 2521870031.

It can be written as a sum of positive squares in 4 ways, for example, as 17422276 + 1283358976 = 4174^2 + 35824^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24977 + ... + 56792.

It is an arithmetic number, because the mean of its divisors is an integer number (98164885).

Almost surely, 2^1300781252 is an apocalyptic number.

It is an amenable number.

1300781252 is a deficient number, since it is larger than the sum of its proper divisors (1055175988).

1300781252 is a wasteful number, since it uses less digits than its factorization.

1300781252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81911 (or 81909 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1300781252 is about 36066.3451433605. The cubic root of 1300781252 is about 1091.6114682215.

The spelling of 1300781252 in words is "one billion, three hundred million, seven hundred eighty-one thousand, two hundred fifty-two".