28881848 has 16 divisors (see below), whose sum is σ = 54349080. Its totient is φ = 14388768.

The previous prime is 28881841. The next prime is 28881869. The reversal of 28881848 is 84818882.

It is a super-2 number, since 2×28881848² = 1668322287790208, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28881841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4115 + ... + 8642.

Almost surely, 2^28881848 is an apocalyptic number.

It is an amenable number.

28881848 is a deficient number, since it is larger than the sum of its proper divisors (25467232).

28881848 is a wasteful number, since it uses less digits than its factorization.

28881848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13046 (or 13042 counting only the distinct ones).

The product of its digits is 262144, while the sum is 47.

The square root of 28881848 is about 5374.1834728636. The cubic root of 28881848 is about 306.8138728260.

The spelling of 28881848 in words is "twenty-eight million, eight hundred eighty-one thousand, eight hundred forty-eight".