8817428 has 12 divisors (see below), whose sum is σ = 15683892. Its totient is φ = 4336320.

The previous prime is 8817409. The next prime is 8817437. The reversal of 8817428 is 8247188.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2274064 + 6543364 = 1508^2 + 2558^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8817391 and 8817400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17825 + ... + 18312.

It is an arithmetic number, because the mean of its divisors is an integer number (1306991).

Almost surely, 2^8817428 is an apocalyptic number.

It is an amenable number.

8817428 is a deficient number, since it is larger than the sum of its proper divisors (6866464).

8817428 is a wasteful number, since it uses less digits than its factorization.

8817428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36202 (or 36200 counting only the distinct ones).

The product of its digits is 28672, while the sum is 38.

The square root of 8817428 is about 2969.4154306867. The cubic root of 8817428 is about 206.5922254731.

The spelling of 8817428 in words is "eight million, eight hundred seventeen thousand, four hundred twenty-eight".