1384040 has 32 divisors (see below), whose sum is σ = 3559680. Its totient is φ = 474432.

The previous prime is 1384027. The next prime is 1384043. The reversal of 1384040 is 404831.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1384043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2192 + ... + 2751.

It is an arithmetic number, because the mean of its divisors is an integer number (111240).

2^1384040 is an apocalyptic number.

1384040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1384040 is an abundant number, since it is smaller than the sum of its proper divisors (2175640).

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

1384040 is a wasteful number, since it uses less digits than its factorization.

1384040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4961 (or 4957 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1384040 is about 1176.4522939754. The cubic root of 1384040 is about 111.4421667141.

Adding to 1384040 its reverse (404831), we get a palindrome (1788871).

The spelling of 1384040 in words is "one million, three hundred eighty-four thousand, forty".