28449908 has 12 divisors (see below), whose sum is σ = 52716132. Its totient is φ = 13388160.

The previous prime is 28449907. The next prime is 28449931. The reversal of 28449908 is 80994482.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12545764 + 15904144 = 3542^2 + 3988^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28449907) 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, 209123 + ... + 209258.

It is an arithmetic number, because the mean of its divisors is an integer number (4393011).

Almost surely, 2^28449908 is an apocalyptic number.

It is an amenable number.

28449908 is a deficient number, since it is larger than the sum of its proper divisors (24266224).

28449908 is a wasteful number, since it uses less digits than its factorization.

28449908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418402 (or 418400 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 28449908 is about 5333.8455170730. The cubic root of 28449908 is about 305.2766745021.

The spelling of 28449908 in words is "twenty-eight million, four hundred forty-nine thousand, nine hundred eight".