28253841 has 48 divisors (see below), whose sum is σ = 48558528. Its totient is φ = 14448000.

The previous prime is 28253831. The next prime is 28253857. The reversal of 28253841 is 14835282.

It is not a de Polignac number, because 28253841 - 2⁶ = 28253777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28253831) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163231 + ... + 163403.

It is an arithmetic number, because the mean of its divisors is an integer number (1011636).

Almost surely, 2^28253841 is an apocalyptic number.

28253841 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28253841 is a deficient number, since it is larger than the sum of its proper divisors (20304687).

28253841 is a wasteful number, since it uses less digits than its factorization.

28253841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302 (or 295 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 28253841 is about 5315.4342249717. The cubic root of 28253841 is about 304.5737699454.

It can be divided in two parts, 2825 and 3841, that added together give a palindrome (6666).

The spelling of 28253841 in words is "twenty-eight million, two hundred fifty-three thousand, eight hundred forty-one".