28354898 has 24 divisors (see below), whose sum is σ = 50352204. Its totient is φ = 11895840.

The previous prime is 28354891. The next prime is 28354901. The reversal of 28354898 is 89845382.

It can be written as a sum of positive squares in 2 ways, for example, as 27071209 + 1283689 = 5203^2 + 1133^2 .

It is not an unprimeable number, because it can be changed into a prime (28354891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1361 + ... + 7652.

Almost surely, 2^28354898 is an apocalyptic number.

28354898 is a deficient number, since it is larger than the sum of its proper divisors (21997306).

28354898 is a wasteful number, since it uses less digits than its factorization.

28354898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9050 (or 9039 counting only the distinct ones).

The product of its digits is 552960, while the sum is 47.

The square root of 28354898 is about 5324.9317366517. The cubic root of 28354898 is about 304.9364662074.

The spelling of 28354898 in words is "twenty-eight million, three hundred fifty-four thousand, eight hundred ninety-eight".