28003876 has 6 divisors (see below), whose sum is σ = 49006790. Its totient is φ = 14001936.

The previous prime is 28003873. The next prime is 28003883. The reversal of 28003876 is 67830082.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26625600 + 1378276 = 5160^2 + 1174^2 .

It is not an unprimeable number, because it can be changed into a prime (28003873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3500481 + ... + 3500488.

Almost surely, 2^28003876 is an apocalyptic number.

It is an amenable number.

28003876 is a deficient number, since it is larger than the sum of its proper divisors (21002914).

28003876 is a wasteful number, since it uses less digits than its factorization.

28003876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7000973 (or 7000971 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 28003876 is about 5291.8688570296. The cubic root of 28003876 is about 303.6729082302.

The spelling of 28003876 in words is "twenty-eight million, three thousand, eight hundred seventy-six".