1674840 has 64 divisors (see below), whose sum is σ = 5326560. Its totient is φ = 419840.

The previous prime is 1674821. The next prime is 1674847. The reversal of 1674840 is 484761.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1674798 and 1674807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1674847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1630 + ... + 2450.

2^1674840 is an apocalyptic number.

1674840 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 1674840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2663280).

1674840 is an abundant number, since it is smaller than the sum of its proper divisors (3651720).

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

1674840 is a wasteful number, since it uses less digits than its factorization.

1674840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852 (or 848 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 1674840 is about 1294.1560956855. The cubic root of 1674840 is about 118.7566053574.

The spelling of 1674840 in words is "one million, six hundred seventy-four thousand, eight hundred forty".