1278887282 has 8 divisors (see below), whose sum is σ = 1918963200. Its totient is φ = 639232884.

The previous prime is 1278887263. The next prime is 1278887347. The reversal of 1278887282 is 2827888721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1278887282² = 3271105360122695048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97682 + ... + 109997.

It is an arithmetic number, because the mean of its divisors is an integer number (239870400).

Almost surely, 2^1278887282 is an apocalyptic number.

1278887282 is a deficient number, since it is larger than the sum of its proper divisors (640075918).

1278887282 is a wasteful number, since it uses less digits than its factorization.

1278887282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210760.

The product of its digits is 1605632, while the sum is 53.

The square root of 1278887282 is about 35761.5335521283. The cubic root of 1278887282 is about 1085.4523323691.

The spelling of 1278887282 in words is "one billion, two hundred seventy-eight million, eight hundred eighty-seven thousand, two hundred eighty-two".