28910226 has 16 divisors (see below), whose sum is σ = 58471200. Its totient is φ = 9528288.

The previous prime is 28910221. The next prime is 28910227. The reversal of 28910226 is 62201982.

It is a junction number, because it is equal to n+sod(n) for n = 28910193 and 28910202.

It is not an unprimeable number, because it can be changed into a prime (28910221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26536 + ... + 27603.

It is an arithmetic number, because the mean of its divisors is an integer number (3654450).

Almost surely, 2^28910226 is an apocalyptic number.

28910226 is an abundant number, since it is smaller than the sum of its proper divisors (29560974).

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

28910226 is a wasteful number, since it uses less digits than its factorization.

28910226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54233.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 28910226 is about 5376.8230396769. The cubic root of 28910226 is about 306.9143270862.

The spelling of 28910226 in words is "twenty-eight million, nine hundred ten thousand, two hundred twenty-six".