28590234 has 8 divisors (see below), whose sum is σ = 57180480. Its totient is φ = 9530076.

The previous prime is 28590223. The next prime is 28590239. The reversal of 28590234 is 43209582.

It is a happy number.

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

28590234 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 28590195 and 28590204.

It is not an unprimeable number, because it can be changed into a prime (28590239) 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, 2382514 + ... + 2382525.

It is an arithmetic number, because the mean of its divisors is an integer number (7147560).

Almost surely, 2^28590234 is an apocalyptic number.

28590234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28590234 is a wasteful number, since it uses less digits than its factorization.

28590234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4765044.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 28590234 is about 5346.9836356585. The cubic root of 28590234 is about 305.7777659334. Note that the first 4 decimals are identical.

The spelling of 28590234 in words is "twenty-eight million, five hundred ninety thousand, two hundred thirty-four".