8778428 has 12 divisors (see below), whose sum is σ = 15737232. Its totient is φ = 4282080.

The previous prime is 8778421. The next prime is 8778431. The reversal of 8778428 is 8248778.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8778421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26600 + ... + 26927.

It is an arithmetic number, because the mean of its divisors is an integer number (1311436).

Almost surely, 2^8778428 is an apocalyptic number.

It is an amenable number.

8778428 is a deficient number, since it is larger than the sum of its proper divisors (6958804).

8778428 is a wasteful number, since it uses less digits than its factorization.

8778428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53572 (or 53570 counting only the distinct ones).

The product of its digits is 200704, while the sum is 44.

The square root of 8778428 is about 2962.8412039797. The cubic root of 8778428 is about 206.2871854594.

The spelling of 8778428 in words is "eight million, seven hundred seventy-eight thousand, four hundred twenty-eight".