28254144 has 112 divisors (see below), whose sum is σ = 79589376. Its totient is φ = 8832000.

The previous prime is 28254103. The next prime is 28254157. The reversal of 28254144 is 44145282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279694 + ... + 279794.

Almost surely, 2^28254144 is an apocalyptic number.

28254144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28254144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39794688).

28254144 is an abundant number, since it is smaller than the sum of its proper divisors (51335232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28254144 is a wasteful number, since it uses less digits than its factorization.

28254144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 184 counting only the distinct ones).

The product of its digits is 10240, while the sum is 30.

The square root of 28254144 is about 5315.4627268000. The cubic root of 28254144 is about 304.5748587120.

The spelling of 28254144 in words is "twenty-eight million, two hundred fifty-four thousand, one hundred forty-four".