1284772512 has 48 divisors (see below), whose sum is σ = 3379108320. Its totient is φ = 427421952.

The previous prime is 1284772493. The next prime is 1284772549. The reversal of 1284772512 is 2152774821.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37414 + ... + 63002.

It is an arithmetic number, because the mean of its divisors is an integer number (70398090).

Almost surely, 2^1284772512 is an apocalyptic number.

1284772512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1284772512 is an abundant number, since it is smaller than the sum of its proper divisors (2094335808).

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

1284772512 is a wasteful number, since it uses less digits than its factorization.

1284772512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26125 (or 26117 counting only the distinct ones).

The product of its digits is 62720, while the sum is 39.

The square root of 1284772512 is about 35843.7234672962. The cubic root of 1284772512 is about 1087.1148094933.

The spelling of 1284772512 in words is "one billion, two hundred eighty-four million, seven hundred seventy-two thousand, five hundred twelve".