7271828 has 12 divisors (see below), whose sum is σ = 12747252. Its totient is φ = 3629760.

The previous prime is 7271821. The next prime is 7271839. The reversal of 7271828 is 8281727.

It can be written as a sum of positive squares in 2 ways, for example, as 3952144 + 3319684 = 1988^2 + 1822^2 .

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7271821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2048 + ... + 4328.

It is an arithmetic number, because the mean of its divisors is an integer number (1062271).

Almost surely, 2^7271828 is an apocalyptic number.

It is an amenable number.

7271828 is a deficient number, since it is larger than the sum of its proper divisors (5475424).

7271828 is a wasteful number, since it uses less digits than its factorization.

7271828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3082 (or 3080 counting only the distinct ones).

The product of its digits is 12544, while the sum is 35.

The square root of 7271828 is about 2696.6327150726. The cubic root of 7271828 is about 193.7378753426.

The spelling of 7271828 in words is "seven million, two hundred seventy-one thousand, eight hundred twenty-eight".