1260643244 has 12 divisors (see below), whose sum is σ = 2521286544. Its totient is φ = 540275664.

The previous prime is 1260643231. The next prime is 1260643283. The reversal of 1260643244 is 4423460621.

1260643244 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1260643244.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22511459 + ... + 22511514.

It is an arithmetic number, because the mean of its divisors is an integer number (210107212).

Almost surely, 2^1260643244 is an apocalyptic number.

1260643244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1260643244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1260643244 is a wasteful number, since it uses less digits than its factorization.

1260643244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45022984 (or 45022982 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 1260643244 is about 35505.5382158896. The cubic root of 1260643244 is about 1080.2660649919.

The spelling of 1260643244 in words is "one billion, two hundred sixty million, six hundred forty-three thousand, two hundred forty-four".