28098939 has 16 divisors (see below), whose sum is σ = 42649344. Its totient is φ = 16288800.

The previous prime is 28098937. The next prime is 28098953. The reversal of 28098939 is 93989082.

It is not a de Polignac number, because 28098939 - 2¹ = 28098937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28098937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17752 + ... + 19269.

It is an arithmetic number, because the mean of its divisors is an integer number (2665584).

Almost surely, 2^28098939 is an apocalyptic number.

28098939 is a deficient number, since it is larger than the sum of its proper divisors (14550405).

28098939 is a wasteful number, since it uses less digits than its factorization.

28098939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37058.

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 28098939 is about 5300.8432348071. The cubic root of 28098939 is about 304.0161399268.

The spelling of 28098939 in words is "twenty-eight million, ninety-eight thousand, nine hundred thirty-nine".