1286418228 has 12 divisors (see below), whose sum is σ = 3001642560. Its totient is φ = 428806072.

The previous prime is 1286418227. The next prime is 1286418233. The reversal of 1286418228 is 8228146821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1286418228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286418227) 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, 53600748 + ... + 53600771.

It is an arithmetic number, because the mean of its divisors is an integer number (250136880).

Almost surely, 2^1286418228 is an apocalyptic number.

It is an amenable number.

1286418228 is an abundant number, since it is smaller than the sum of its proper divisors (1715224332).

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

1286418228 is a wasteful number, since it uses less digits than its factorization.

1286418228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107201526 (or 107201524 counting only the distinct ones).

The product of its digits is 98304, while the sum is 42.

The square root of 1286418228 is about 35866.6729429982. The cubic root of 1286418228 is about 1087.5787875802.

The spelling of 1286418228 in words is "one billion, two hundred eighty-six million, four hundred eighteen thousand, two hundred twenty-eight".