8990428 has 12 divisors (see below), whose sum is σ = 15830920. Its totient is φ = 4467312.

The previous prime is 8990413. The next prime is 8990431. The reversal of 8990428 is 8240998.

It is a happy number.

8990428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 6243 + ... + 7546.

Almost surely, 2^8990428 is an apocalyptic number.

It is an amenable number.

8990428 is a deficient number, since it is larger than the sum of its proper divisors (6840492).

8990428 is a wasteful number, since it uses less digits than its factorization.

8990428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13956 (or 13954 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 8990428 is about 2998.4042422595. The cubic root of 8990428 is about 207.9346133230.

The spelling of 8990428 in words is "eight million, nine hundred ninety thousand, four hundred twenty-eight".