1774728 has 36 divisors (see below), whose sum is σ = 4837365. Its totient is φ = 587808.

The previous prime is 1774723. The next prime is 1774741. The reversal of 1774728 is 8274771.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 1695204 + 79524 = 1302^2 + 282^2 .

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

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=942.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1774692 and 1774701.

It is not an unprimeable number, because it can be changed into a prime (1774723) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11226 + ... + 11382.

2^1774728 is an apocalyptic number.

1774728 is a gapful number since it is divisible by the number (18) 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 1774728

1774728 is an abundant number, since it is smaller than the sum of its proper divisors (3062637).

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

1774728 is a wasteful number, since it uses less digits than its factorization.

1774728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 162 counting only the distinct ones).

The product of its digits is 21952, while the sum is 36.

The square root of 1774728 is about 1332.1891757555. The cubic root of 1774728 is about 121.0720605302.

The spelling of 1774728 in words is "one million, seven hundred seventy-four thousand, seven hundred twenty-eight".