28385226 has 12 divisors (see below), whose sum is σ = 61501362. Its totient is φ = 9461736.

The previous prime is 28385219. The next prime is 28385233. The reversal of 28385226 is 62258382.

It is an interprime number because it is at equal distance from previous prime (28385219) and next prime (28385233).

It can be written as a sum of positive squares in only one way, i.e., 22553001 + 5832225 = 4749^2 + 2415^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 788461 + ... + 788496.

Almost surely, 2^28385226 is an apocalyptic number.

28385226 is an abundant number, since it is smaller than the sum of its proper divisors (33116136).

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

28385226 is a wasteful number, since it uses less digits than its factorization.

28385226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576965 (or 1576962 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 28385226 is about 5327.7787116208. The cubic root of 28385226 is about 305.0451460539.

The spelling of 28385226 in words is "twenty-eight million, three hundred eighty-five thousand, two hundred twenty-six".