1283959328 has 12 divisors (see below), whose sum is σ = 2527794990. Its totient is φ = 641979648.

The previous prime is 1283959319. The next prime is 1283959331. The reversal of 1283959328 is 8239593821.

It can be written as a sum of positive squares in only one way, i.e., 1199098384 + 84860944 = 34628^2 + 9212^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20061833 + ... + 20061896.

Almost surely, 2^1283959328 is an apocalyptic number.

It is an amenable number.

1283959328 is a deficient number, since it is larger than the sum of its proper divisors (1243835662).

1283959328 is an equidigital number, since it uses as much as digits as its factorization.

1283959328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40123739 (or 40123731 counting only the distinct ones).

The product of its digits is 933120, while the sum is 50.

The square root of 1283959328 is about 35832.3782074258. The cubic root of 1283959328 is about 1086.8854015792.

The spelling of 1283959328 in words is "one billion, two hundred eighty-three million, nine hundred fifty-nine thousand, three hundred twenty-eight".