28244424 has 32 divisors (see below), whose sum is σ = 76043520. Its totient is φ = 8690496.

The previous prime is 28244423. The next prime is 28244443. The reversal of 28244424 is 42444282.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 28244391 and 28244400.

It is not an unprimeable number, because it can be changed into a prime (28244423) 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, 44952 + ... + 45575.

It is an arithmetic number, because the mean of its divisors is an integer number (2376360).

Almost surely, 2^28244424 is an apocalyptic number.

28244424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28244424 is an abundant number, since it is smaller than the sum of its proper divisors (47799096).

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

28244424 is a wasteful number, since it uses less digits than its factorization.

28244424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90549 (or 90545 counting only the distinct ones).

The product of its digits is 16384, while the sum is 30.

The square root of 28244424 is about 5314.5483345248. The cubic root of 28244424 is about 304.5399280581.

The spelling of 28244424 in words is "twenty-eight million, two hundred forty-four thousand, four hundred twenty-four".