28019226 has 32 divisors (see below), whose sum is σ = 58480128. Its totient is φ = 8939520.

The previous prime is 28019219. The next prime is 28019237. The reversal of 28019226 is 62291082.

It is a junction number, because it is equal to n+sod(n) for n = 28019193 and 28019202.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17266 + ... + 18818.

It is an arithmetic number, because the mean of its divisors is an integer number (1827504).

Almost surely, 2^28019226 is an apocalyptic number.

28019226 is an abundant number, since it is smaller than the sum of its proper divisors (30460902).

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

28019226 is a wasteful number, since it uses less digits than its factorization.

28019226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686.

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

The square root of 28019226 is about 5293.3189966221. The cubic root of 28019226 is about 303.7283830236.

The spelling of 28019226 in words is "twenty-eight million, nineteen thousand, two hundred twenty-six".