28298803 has 4 divisors (see below), whose sum is σ = 30475648. Its totient is φ = 26121960.

The previous prime is 28298801. The next prime is 28298813. The reversal of 28298803 is 30889282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30889282 = 2 ⋅15444641.

It is a cyclic number.

It is not a de Polignac number, because 28298803 - 2¹ = 28298801 is a prime.

It is a super-3 number, since 3×28298803³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28298801) 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, 1088403 + ... + 1088428.

It is an arithmetic number, because the mean of its divisors is an integer number (7618912).

Almost surely, 2^28298803 is an apocalyptic number.

28298803 is a deficient number, since it is larger than the sum of its proper divisors (2176845).

28298803 is a wasteful number, since it uses less digits than its factorization.

28298803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176844.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 28298803 is about 5319.6619253483. The cubic root of 28298803 is about 304.7352463750.

The spelling of 28298803 in words is "twenty-eight million, two hundred ninety-eight thousand, eight hundred three".