1276449284 has 24 divisors (see below), whose sum is σ = 2580203808. Its totient is φ = 546074240.

The previous prime is 1276449283. The next prime is 1276449299. The reversal of 1276449284 is 4829446721.

It is a super-2 number, since 2×1276449284² = 3258645549248225312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1276449283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 852494 + ... + 853989.

It is an arithmetic number, because the mean of its divisors is an integer number (107508492).

Almost surely, 2^1276449284 is an apocalyptic number.

It is an amenable number.

1276449284 is an abundant number, since it is smaller than the sum of its proper divisors (1303754524).

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

1276449284 is a wasteful number, since it uses less digits than its factorization.

1276449284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706515 (or 1706513 counting only the distinct ones).

The product of its digits is 774144, while the sum is 47.

The square root of 1276449284 is about 35727.4304141790. The cubic root of 1276449284 is about 1084.7621454020.

The spelling of 1276449284 in words is "one billion, two hundred seventy-six million, four hundred forty-nine thousand, two hundred eighty-four".