28890876 has 24 divisors (see below), whose sum is σ = 77042560. Its totient is φ = 8254512.

The previous prime is 28890863. The next prime is 28890893. The reversal of 28890876 is 67809882.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171886 + ... + 172053.

Almost surely, 2^28890876 is an apocalyptic number.

It is an amenable number.

28890876 is an abundant number, since it is smaller than the sum of its proper divisors (48151684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28890876 is a wasteful number, since it uses less digits than its factorization.

28890876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343953 (or 343951 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 28890876 is about 5375.0233487865. The cubic root of 28890876 is about 306.8458378522.

The spelling of 28890876 in words is "twenty-eight million, eight hundred ninety thousand, eight hundred seventy-six".