28093224 has 32 divisors (see below), whose sum is σ = 70884000. Its totient is φ = 9277632.

The previous prime is 28093211. The next prime is 28093243. The reversal of 28093224 is 42239082.

It is a junction number, because it is equal to n+sod(n) for n = 28093191 and 28093200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2754 + ... + 7985.

It is an arithmetic number, because the mean of its divisors is an integer number (2215125).

Almost surely, 2^28093224 is an apocalyptic number.

28093224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28093224 is an abundant number, since it is smaller than the sum of its proper divisors (42790776).

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

28093224 is a wasteful number, since it uses less digits than its factorization.

28093224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10857 (or 10853 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 28093224 is about 5300.3041422167. The cubic root of 28093224 is about 303.9955274042.

The spelling of 28093224 in words is "twenty-eight million, ninety-three thousand, two hundred twenty-four".