28253401 has 8 divisors (see below), whose sum is σ = 30873024. Its totient is φ = 25642320.

The previous prime is 28253383. The next prime is 28253413. The reversal of 28253401 is 10435282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28253401 - 2⁷ = 28253273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28253441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6231 + ... + 9763.

It is an arithmetic number, because the mean of its divisors is an integer number (3859128).

Almost surely, 2^28253401 is an apocalyptic number.

It is an amenable number.

28253401 is a deficient number, since it is larger than the sum of its proper divisors (2619623).

28253401 is a wasteful number, since it uses less digits than its factorization.

28253401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 28253401 is about 5315.3928359059. The cubic root of 28253401 is about 304.5721888842.

Adding to 28253401 its reverse (10435282), we get a palindrome (38688683).

It can be divided in two parts, 2825 and 3401, that added together give a palindrome (6226).

The spelling of 28253401 in words is "twenty-eight million, two hundred fifty-three thousand, four hundred one".