1375740 has 36 divisors (see below), whose sum is σ = 4173624. Its totient is φ = 366816.

The previous prime is 1375739. The next prime is 1375747. The reversal of 1375740 is 475731.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3642 + ... + 4001.

It is an arithmetic number, because the mean of its divisors is an integer number (115934).

2^1375740 is an apocalyptic number.

1375740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1375740 is an abundant number, since it is smaller than the sum of its proper divisors (2797884).

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

1375740 is a wasteful number, since it uses less digits than its factorization.

1375740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7658 (or 7653 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 1375740 is about 1172.9194345734. The cubic root of 1375740 is about 111.2189493784.

Subtracting from 1375740 its reverse (475731), we obtain a palindrome (900009).

The spelling of 1375740 in words is "one million, three hundred seventy-five thousand, seven hundred forty".