28490226 has 8 divisors (see below), whose sum is σ = 56980464. Its totient is φ = 9496740.

The previous prime is 28490207. The next prime is 28490239. The reversal of 28490226 is 62209482.

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

28490226 is an admirable number.

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, 2374180 + ... + 2374191.

It is an arithmetic number, because the mean of its divisors is an integer number (7122558).

Almost surely, 2^28490226 is an apocalyptic number.

28490226 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.

28490226 is a wasteful number, since it uses less digits than its factorization.

28490226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4748376.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 28490226 is about 5337.6236285448. The cubic root of 28490226 is about 305.4208148082.

The spelling of 28490226 in words is "twenty-eight million, four hundred ninety thousand, two hundred twenty-six".