1284400852 has 24 divisors (see below), whose sum is σ = 2571840320. Its totient is φ = 549806400.

The previous prime is 1284400837. The next prime is 1284400853. The reversal of 1284400852 is 2580044821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284400853) 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, 2649 + ... + 50752.

Almost surely, 2^1284400852 is an apocalyptic number.

It is an amenable number.

1284400852 is an abundant number, since it is smaller than the sum of its proper divisors (1287439468).

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

1284400852 is a wasteful number, since it uses less digits than its factorization.

1284400852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54271 (or 54269 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 34.

The square root of 1284400852 is about 35838.5386420819. The cubic root of 1284400852 is about 1087.0099722419.

The spelling of 1284400852 in words is "one billion, two hundred eighty-four million, four hundred thousand, eight hundred fifty-two".