28098511 has 12 divisors (see below), whose sum is σ = 34407480. Its totient is φ = 22816080.

The previous prime is 28098509. The next prime is 28098523. The reversal of 28098511 is 11589082.

It is not a de Polignac number, because 28098511 - 2¹ = 28098509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28098011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14160 + ... + 16021.

It is an arithmetic number, because the mean of its divisors is an integer number (2867290).

Almost surely, 2^28098511 is an apocalyptic number.

28098511 is a deficient number, since it is larger than the sum of its proper divisors (6308969).

28098511 is a wasteful number, since it uses less digits than its factorization.

28098511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30214 (or 30207 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 28098511 is about 5300.8028637179. The cubic root of 28098511 is about 304.0145963386.

The spelling of 28098511 in words is "twenty-eight million, ninety-eight thousand, five hundred eleven".