28098256 has 10 divisors (see below), whose sum is σ = 54440402. Its totient is φ = 14049120.

The previous prime is 28098253. The next prime is 28098269. The reversal of 28098256 is 65289082.

It can be written as a sum of positive squares in only one way, i.e., 24800400 + 3297856 = 4980^2 + 1816^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28098253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 878055 + ... + 878086.

Almost surely, 2^28098256 is an apocalyptic number.

It is an amenable number.

28098256 is a deficient number, since it is larger than the sum of its proper divisors (26342146).

28098256 is a wasteful number, since it uses less digits than its factorization.

28098256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756149 (or 1756143 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 28098256 is about 5300.7788107032. The cubic root of 28098256 is about 304.0136766700.

The spelling of 28098256 in words is "twenty-eight million, ninety-eight thousand, two hundred fifty-six".