8540428 has 12 divisors (see below), whose sum is σ = 16095520. Its totient is φ = 3941712.

The previous prime is 8540401. The next prime is 8540431. The reversal of 8540428 is 8240458.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 8540428.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82068 + ... + 82171.

Almost surely, 2^8540428 is an apocalyptic number.

It is an amenable number.

8540428 is a deficient number, since it is larger than the sum of its proper divisors (7555092).

8540428 is a wasteful number, since it uses less digits than its factorization.

8540428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164256 (or 164254 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 8540428 is about 2922.4010676155. The cubic root of 8540428 is about 204.4057986797.

The spelling of 8540428 in words is "eight million, five hundred forty thousand, four hundred twenty-eight".