1282440 has 32 divisors (see below), whose sum is σ = 3847680. Its totient is φ = 341952.

The previous prime is 1282427. The next prime is 1282451. The reversal of 1282440 is 442821.

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, 5224 + ... + 5463.

It is an arithmetic number, because the mean of its divisors is an integer number (120240).

2^1282440 is an apocalyptic number.

1282440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1282440 is an abundant number, since it is smaller than the sum of its proper divisors (2565240).

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

1282440 is a wasteful number, since it uses less digits than its factorization.

1282440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10701 (or 10697 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1282440 is about 1132.4486743336. The cubic root of 1282440 is about 108.6456523196.

The spelling of 1282440 in words is "one million, two hundred eighty-two thousand, four hundred forty".