1284764056 has 16 divisors (see below), whose sum is σ = 2411816400. Its totient is φ = 641613024.

The previous prime is 1284764027. The next prime is 1284764057. The reversal of 1284764056 is 6504674821.

It is a super-2 number, since 2×1284764056² = 3301237359179142272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284764057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88995 + ... + 102418.

It is an arithmetic number, because the mean of its divisors is an integer number (150738525).

Almost surely, 2^1284764056 is an apocalyptic number.

It is an amenable number.

1284764056 is a deficient number, since it is larger than the sum of its proper divisors (1127052344).

1284764056 is a wasteful number, since it uses less digits than its factorization.

1284764056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192258 (or 192254 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 1284764056 is about 35843.6055106068. The cubic root of 1284764056 is about 1087.1124244633.

The spelling of 1284764056 in words is "one billion, two hundred eighty-four million, seven hundred sixty-four thousand, fifty-six".