28248099 has 32 divisors (see below), whose sum is σ = 43296768. Its totient is φ = 16224000.

The previous prime is 28248097. The next prime is 28248133. The reversal of 28248099 is 99084282.

It is not a de Polignac number, because 28248099 - 2¹ = 28248097 is a prime.

It is a super-2 number, since 2×28248099² = 1595910194227602, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28248099.

It is not an unprimeable number, because it can be changed into a prime (28248091) 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 31 ways as a sum of consecutive naturals, for example, 53959 + ... + 54479.

It is an arithmetic number, because the mean of its divisors is an integer number (1353024).

Almost surely, 2^28248099 is an apocalyptic number.

28248099 is a deficient number, since it is larger than the sum of its proper divisors (15048669).

28248099 is a wasteful number, since it uses less digits than its factorization.

28248099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 28248099 is about 5314.8940723217. The cubic root of 28248099 is about 304.5531358060.

The spelling of 28248099 in words is "twenty-eight million, two hundred forty-eight thousand, ninety-nine".