1394240 has 28 divisors (see below), whose sum is σ = 3320796. Its totient is φ = 557568.

The previous prime is 1394209. The next prime is 1394251. The reversal of 1394240 is 424931.

It can be written as a sum of positive squares in 2 ways, for example, as 1098304 + 295936 = 1048^2 + 544^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1859 + ... + 2498.

2^1394240 is an apocalyptic number.

1394240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1394240 is an abundant number, since it is smaller than the sum of its proper divisors (1926556).

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

1394240 is an equidigital number, since it uses as much as digits as its factorization.

1394240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4374 (or 4364 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1394240 is about 1180.7794036144. The cubic root of 1394240 is about 111.7152631233.

The spelling of 1394240 in words is "one million, three hundred ninety-four thousand, two hundred forty".