28241438 has 16 divisors (see below), whose sum is σ = 43182720. Its totient is φ = 13849176.

The previous prime is 28241431. The next prime is 28241441. The reversal of 28241438 is 83414282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28241431) 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, 55895 + ... + 56397.

It is an arithmetic number, because the mean of its divisors is an integer number (2698920).

Almost surely, 2^28241438 is an apocalyptic number.

28241438 is a deficient number, since it is larger than the sum of its proper divisors (14941282).

28241438 is a wasteful number, since it uses less digits than its factorization.

28241438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991.

The product of its digits is 12288, while the sum is 32.

The square root of 28241438 is about 5314.2674001221. The cubic root of 28241438 is about 304.5291956946.

The spelling of 28241438 in words is "twenty-eight million, two hundred forty-one thousand, four hundred thirty-eight".