1283901872 has 20 divisors (see below), whose sum is σ = 2713702056. Its totient is φ = 583591680.

The previous prime is 1283901821. The next prime is 1283901893. The reversal of 1283901872 is 2781093821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3647273 + ... + 3647624.

Almost surely, 2^1283901872 is an apocalyptic number.

It is an amenable number.

1283901872 is an abundant number, since it is smaller than the sum of its proper divisors (1429800184).

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

1283901872 is a wasteful number, since it uses less digits than its factorization.

1283901872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7294916 (or 7294910 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 1283901872 is about 35831.5764654585. The cubic root of 1283901872 is about 1086.8691889630.

The spelling of 1283901872 in words is "one billion, two hundred eighty-three million, nine hundred one thousand, eight hundred seventy-two".