28624234 has 8 divisors (see below), whose sum is σ = 43185060. Its totient is φ = 14229216.

The previous prime is 28624231. The next prime is 28624303. The reversal of 28624234 is 43242682.

It can be written as a sum of positive squares in 2 ways, for example, as 27594009 + 1030225 = 5253^2 + 1015^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28624196 and 28624205.

It is not an unprimeable number, because it can be changed into a prime (28624231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41019 + ... + 41710.

Almost surely, 2^28624234 is an apocalyptic number.

28624234 is a deficient number, since it is larger than the sum of its proper divisors (14560826).

28624234 is a wasteful number, since it uses less digits than its factorization.

28624234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82904.

The product of its digits is 18432, while the sum is 31.

The square root of 28624234 is about 5350.1620536204. The cubic root of 28624234 is about 305.8989299825.

The spelling of 28624234 in words is "twenty-eight million, six hundred twenty-four thousand, two hundred thirty-four".