28833438 has 16 divisors (see below), whose sum is σ = 57911040. Its totient is φ = 9570456.

The previous prime is 28833403. The next prime is 28833451. The reversal of 28833438 is 83433882.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28833396 and 28833405.

It is a congruent number.

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, 8620 + ... + 11487.

It is an arithmetic number, because the mean of its divisors is an integer number (3619440).

Almost surely, 2^28833438 is an apocalyptic number.

28833438 is an abundant number, since it is smaller than the sum of its proper divisors (29077602).

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

28833438 is a wasteful number, since it uses less digits than its factorization.

28833438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20351.

The product of its digits is 110592, while the sum is 39.

The square root of 28833438 is about 5369.6776439559. The cubic root of 28833438 is about 306.6423560334.

The spelling of 28833438 in words is "twenty-eight million, eight hundred thirty-three thousand, four hundred thirty-eight".