1374840 has 128 divisors (see below), whose sum is σ = 4896000. Its totient is φ = 342144.

The previous prime is 1374833. The next prime is 1374847. The reversal of 1374840 is 484731.

It is an interprime number because it is at equal distance from previous prime (1374833) and next prime (1374847).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1374847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20487 + ... + 20553.

It is an arithmetic number, because the mean of its divisors is an integer number (38250).

2^1374840 is an apocalyptic number.

1374840 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 1374840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2448000).

1374840 is an abundant number, since it is smaller than the sum of its proper divisors (3521160).

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

1374840 is a wasteful number, since it uses less digits than its factorization.

1374840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 1374840 is about 1172.5357137418. The cubic root of 1374840 is about 111.1946911876.

The spelling of 1374840 in words is "one million, three hundred seventy-four thousand, eight hundred forty".