17228420 has 24 divisors (see below), whose sum is σ = 39469248. Its totient is φ = 6264800.

The previous prime is 17228417. The next prime is 17228437. The reversal of 17228420 is 2482271.

It is a self number, because there is not a number n which added to its sum of digits gives 17228420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38936 + ... + 39375.

It is an arithmetic number, because the mean of its divisors is an integer number (1644552).

Almost surely, 2^17228420 is an apocalyptic number.

17228420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17228420 is an abundant number, since it is smaller than the sum of its proper divisors (22240828).

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

17228420 is a wasteful number, since it uses less digits than its factorization.

17228420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78331 (or 78329 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 17228420 is about 4150.7131917298. The cubic root of 17228420 is about 258.2746709209.

The spelling of 17228420 in words is "seventeen million, two hundred twenty-eight thousand, four hundred twenty".