1283398236 has 48 divisors (see below), whose sum is σ = 3408494880. Its totient is φ = 417363840.

The previous prime is 1283398159. The next prime is 1283398271. The reversal of 1283398236 is 6328933821.

1283398236 is a `hidden beast` number, since 1 + 28 + 3 + 398 + 236 = 666.

It is a super-2 number, since 2×1283398236² = 3294222064335823392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1283398191 and 1283398200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140491 + ... + 149346.

It is an arithmetic number, because the mean of its divisors is an integer number (71010310).

Almost surely, 2^1283398236 is an apocalyptic number.

It is an amenable number.

1283398236 is an abundant number, since it is smaller than the sum of its proper divisors (2125096644).

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

1283398236 is a wasteful number, since it uses less digits than its factorization.

1283398236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289891 (or 289883 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 1283398236 is about 35824.5479524864. The cubic root of 1283398236 is about 1086.7270550371.

The spelling of 1283398236 in words is "one billion, two hundred eighty-three million, three hundred ninety-eight thousand, two hundred thirty-six".