28809026 has 8 divisors (see below), whose sum is σ = 44133120. Its totient is φ = 14097988.

The previous prime is 28809023. The next prime is 28809037. The reversal of 28809026 is 62090882.

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 (28809023) 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, 153146 + ... + 153333.

It is an arithmetic number, because the mean of its divisors is an integer number (5516640).

Almost surely, 2^28809026 is an apocalyptic number.

28809026 is a deficient number, since it is larger than the sum of its proper divisors (15324094).

28809026 is a wasteful number, since it uses less digits than its factorization.

28809026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306528.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 28809026 is about 5367.4040280195. The cubic root of 28809026 is about 306.5557914134. Note that the first 3 decimals are identical.

The spelling of 28809026 in words is "twenty-eight million, eight hundred nine thousand, twenty-six".