1478240 has 24 divisors (see below), whose sum is σ = 3492720. Its totient is φ = 591232.

The previous prime is 1478237. The next prime is 1478251. The reversal of 1478240 is 428741.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4460 + ... + 4779.

It is an arithmetic number, because the mean of its divisors is an integer number (145530).

2^1478240 is an apocalyptic number.

1478240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1478240 is an abundant number, since it is smaller than the sum of its proper divisors (2014480).

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

1478240 is an equidigital number, since it uses as much as digits as its factorization.

1478240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9254 (or 9246 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 1478240 is about 1215.8289353359. The cubic root of 1478240 is about 113.9151929020.

The spelling of 1478240 in words is "one million, four hundred seventy-eight thousand, two hundred forty".