1385240 has 16 divisors (see below), whose sum is σ = 3116880. Its totient is φ = 554080.

The previous prime is 1385213. The next prime is 1385273. The reversal of 1385240 is 425831.

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, 17276 + ... + 17355.

It is an arithmetic number, because the mean of its divisors is an integer number (194805).

2^1385240 is an apocalyptic number.

1385240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1385240 is an abundant number, since it is smaller than the sum of its proper divisors (1731640).

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

1385240 is a wasteful number, since it uses less digits than its factorization.

1385240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34642 (or 34638 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1385240 is about 1176.9621914063. The cubic root of 1385240 is about 111.4743651981.

The spelling of 1385240 in words is "one million, three hundred eighty-five thousand, two hundred forty".