1373040 has 60 divisors (see below), whose sum is σ = 4613544. Its totient is φ = 365952.

The previous prime is 1373027. The next prime is 1373041. The reversal of 1373040 is 403731.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234 + ... + 1673.

2^1373040 is an apocalyptic number.

1373040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1373040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2306772).

1373040 is an abundant number, since it is smaller than the sum of its proper divisors (3240504).

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

1373040 is a wasteful number, since it uses less digits than its factorization.

1373040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926 (or 1917 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 1373040 is about 1171.7678951055. The cubic root of 1373040 is about 111.1461430278.

Adding to 1373040 its reverse (403731), we get a palindrome (1776771).

The spelling of 1373040 in words is "one million, three hundred seventy-three thousand, forty".