1272820748 has 6 divisors (see below), whose sum is σ = 2227436316. Its totient is φ = 636410372.

The previous prime is 1272820721. The next prime is 1272820751. The reversal of 1272820748 is 8470282721.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159102590 + ... + 159102597.

It is an arithmetic number, because the mean of its divisors is an integer number (371239386).

Almost surely, 2^1272820748 is an apocalyptic number.

It is an amenable number.

1272820748 is a deficient number, since it is larger than the sum of its proper divisors (954615568).

1272820748 is a wasteful number, since it uses less digits than its factorization.

1272820748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318205191 (or 318205189 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 41.

The square root of 1272820748 is about 35676.6134603608. The cubic root of 1272820748 is about 1083.7332929085.

The spelling of 1272820748 in words is "one billion, two hundred seventy-two million, eight hundred twenty thousand, seven hundred forty-eight".