28228926 has 16 divisors (see below), whose sum is σ = 61590528. Its totient is φ = 8554200.

The previous prime is 28228897. The next prime is 28228933. The reversal of 28228926 is 62982282.

It is a super-2 number, since 2×28228926² = 1593744526226952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213790 + ... + 213921.

It is an arithmetic number, because the mean of its divisors is an integer number (3849408).

Almost surely, 2^28228926 is an apocalyptic number.

28228926 is an abundant number, since it is smaller than the sum of its proper divisors (33361602).

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

28228926 is a wasteful number, since it uses less digits than its factorization.

28228926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427727.

The product of its digits is 55296, while the sum is 39.

The square root of 28228926 is about 5313.0900613485. The cubic root of 28228926 is about 304.4842164915.

The spelling of 28228926 in words is "twenty-eight million, two hundred twenty-eight thousand, nine hundred twenty-six".