28658226 has 16 divisors (see below), whose sum is σ = 60688224. Its totient is φ = 8990784.

The previous prime is 28658219. The next prime is 28658233. The reversal of 28658226 is 62285682.

It is an interprime number because it is at equal distance from previous prime (28658219) and next prime (28658233).

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, 140380 + ... + 140583.

It is an arithmetic number, because the mean of its divisors is an integer number (3793014).

Almost surely, 2^28658226 is an apocalyptic number.

28658226 is an abundant number, since it is smaller than the sum of its proper divisors (32029998).

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

28658226 is a wasteful number, since it uses less digits than its factorization.

28658226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280985.

The product of its digits is 92160, while the sum is 39.

The square root of 28658226 is about 5353.3378372750. The cubic root of 28658226 is about 306.0199696481.

The spelling of 28658226 in words is "twenty-eight million, six hundred fifty-eight thousand, two hundred twenty-six".