1285218 has 24 divisors (see below), whose sum is σ = 3038256. Its totient is φ = 389400.

The previous prime is 1285213. The next prime is 1285223. The reversal of 1285218 is 8125821.

It is an interprime number because it is at equal distance from previous prime (1285213) and next prime (1285223).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1285191 and 1285200.

It is not an unprimeable number, because it can be changed into a prime (1285213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3048 + ... + 3443.

It is an arithmetic number, because the mean of its divisors is an integer number (126594).

2^1285218 is an apocalyptic number.

1285218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1285218 is an abundant number, since it is smaller than the sum of its proper divisors (1753038).

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

1285218 is a wasteful number, since it uses less digits than its factorization.

1285218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510 (or 6507 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 1285218 is about 1133.6745564755. The cubic root of 1285218 is about 108.7240445389.

The spelling of 1285218 in words is "one million, two hundred eighty-five thousand, two hundred eighteen".