28289234 has 8 divisors (see below), whose sum is σ = 42456960. Its totient is φ = 14136916.

The previous prime is 28289231. The next prime is 28289237. The reversal of 28289234 is 43298282.

It is an interprime number because it is at equal distance from previous prime (28289231) and next prime (28289237).

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28289231) 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, 3707 + ... + 8385.

It is an arithmetic number, because the mean of its divisors is an integer number (5307120).

Almost surely, 2^28289234 is an apocalyptic number.

28289234 is a deficient number, since it is larger than the sum of its proper divisors (14167726).

28289234 is a wasteful number, since it uses less digits than its factorization.

28289234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7704.

The product of its digits is 55296, while the sum is 38.

The square root of 28289234 is about 5318.7624500442. The cubic root of 28289234 is about 304.7008946239.

The spelling of 28289234 in words is "twenty-eight million, two hundred eighty-nine thousand, two hundred thirty-four".