28226830 has 16 divisors (see below), whose sum is σ = 50871744. Its totient is φ = 11276640.

The previous prime is 28226827. The next prime is 28226843. The reversal of 28226830 is 3862282.

It is a junction number, because it is equal to n+sod(n) for n = 28226792 and 28226801.

It is a congruent number.

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, 11164 + ... + 13456.

It is an arithmetic number, because the mean of its divisors is an integer number (3179484).

Almost surely, 2^28226830 is an apocalyptic number.

28226830 is a deficient number, since it is larger than the sum of its proper divisors (22644914).

28226830 is a wasteful number, since it uses less digits than its factorization.

28226830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3531.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 28226830 is about 5312.8928090072. The cubic root of 28226830 is about 304.4766803125.

The spelling of 28226830 in words is "twenty-eight million, two hundred twenty-six thousand, eight hundred thirty".