28224434 has 8 divisors (see below), whose sum is σ = 48384768. Its totient is φ = 12096180.

The previous prime is 28224433. The next prime is 28224529. The reversal of 28224434 is 43442282.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×28224434³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28224397 and 28224406.

It is not an unprimeable number, because it can be changed into a prime (28224433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008002 + ... + 1008029.

It is an arithmetic number, because the mean of its divisors is an integer number (6048096).

Almost surely, 2^28224434 is an apocalyptic number.

28224434 is a deficient number, since it is larger than the sum of its proper divisors (20160334).

28224434 is a wasteful number, since it uses less digits than its factorization.

28224434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016040.

The product of its digits is 12288, while the sum is 29.

The square root of 28224434 is about 5312.6673150123. The cubic root of 28224434 is about 304.4680650250.

The spelling of 28224434 in words is "twenty-eight million, two hundred twenty-four thousand, four hundred thirty-four".