1284251268 has 48 divisors (see below), whose sum is σ = 3213846720. Its totient is φ = 397897344.

The previous prime is 1284251233. The next prime is 1284251273. The reversal of 1284251268 is 8621524821.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41055 + ... + 65222.

It is an arithmetic number, because the mean of its divisors is an integer number (66955140).

Almost surely, 2^1284251268 is an apocalyptic number.

It is an amenable number.

1284251268 is an abundant number, since it is smaller than the sum of its proper divisors (1929595452).

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

1284251268 is a wasteful number, since it uses less digits than its factorization.

1284251268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106356 (or 106354 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The square root of 1284251268 is about 35836.4516658667. The cubic root of 1284251268 is about 1086.9677721214.

The spelling of 1284251268 in words is "one billion, two hundred eighty-four million, two hundred fifty-one thousand, two hundred sixty-eight".