28088274 has 8 divisors (see below), whose sum is σ = 56176560. Its totient is φ = 9362756.

The previous prime is 28088237. The next prime is 28088293. The reversal of 28088274 is 47288082.

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

28088274 is an admirable number.

It is a super-2 number, since 2×28088274² = 1577902272598152, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2340684 + ... + 2340695.

It is an arithmetic number, because the mean of its divisors is an integer number (7022070).

Almost surely, 2^28088274 is an apocalyptic number.

28088274 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.

28088274 is a wasteful number, since it uses less digits than its factorization.

28088274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4681384.

The product of its (nonzero) digits is 57344, while the sum is 39.

The square root of 28088274 is about 5299.8371673100. The cubic root of 28088274 is about 303.9776717788.

The spelling of 28088274 in words is "twenty-eight million, eighty-eight thousand, two hundred seventy-four".