28254105 has 36 divisors (see below), whose sum is σ = 53841060. Its totient is φ = 13696320.

The previous prime is 28254103. The next prime is 28254157. The reversal of 28254105 is 50145282.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16475481 + 11778624 = 4059^2 + 3432^2 .

It is not a de Polignac number, because 28254105 - 2¹ = 28254103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28254103) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2851 + ... + 8039.

It is an arithmetic number, because the mean of its divisors is an integer number (1495585).

Almost surely, 2^28254105 is an apocalyptic number.

It is an amenable number.

28254105 is a deficient number, since it is larger than the sum of its proper divisors (25586955).

28254105 is a wasteful number, since it uses less digits than its factorization.

28254105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5222 (or 5208 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 28254105 is about 5315.4590582564. The cubic root of 28254105 is about 304.5747185742.

Adding to 28254105 its reverse (50145282), we get a palindrome (78399387).

The spelling of 28254105 in words is "twenty-eight million, two hundred fifty-four thousand, one hundred five".