1284874852 has 24 divisors (see below), whose sum is σ = 2349289152. Its totient is φ = 613720800.

The previous prime is 1284874849. The next prime is 1284874853. The reversal of 1284874852 is 2584784821.

It is a junction number, because it is equal to n+sod(n) for n = 1284874796 and 1284874805.

It is not an unprimeable number, because it can be changed into a prime (1284874853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67027 + ... + 84037.

It is an arithmetic number, because the mean of its divisors is an integer number (97887048).

Almost surely, 2^1284874852 is an apocalyptic number.

It is an amenable number.

1284874852 is a deficient number, since it is larger than the sum of its proper divisors (1064414300).

1284874852 is a wasteful number, since it uses less digits than its factorization.

1284874852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17859 (or 17857 counting only the distinct ones).

The product of its digits is 1146880, while the sum is 49.

The square root of 1284874852 is about 35845.1510249294. The cubic root of 1284874852 is about 1087.1436738447.

The spelling of 1284874852 in words is "one billion, two hundred eighty-four million, eight hundred seventy-four thousand, eight hundred fifty-two".