226640028 has 24 divisors (see below), whose sum is σ = 529337088. Its totient is φ = 75473776.

The previous prime is 226639997. The next prime is 226640081. The reversal of 226640028 is 820046622.

It is a junction number, because it is equal to n+sod(n) for n = 226639977 and 226640004.

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, 4675 + ... + 21797.

It is an arithmetic number, because the mean of its divisors is an integer number (22055712).

Almost surely, 2^226640028 is an apocalyptic number.

It is an amenable number.

226640028 is an abundant number, since it is smaller than the sum of its proper divisors (302697060).

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

226640028 is a wasteful number, since it uses less digits than its factorization.

226640028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18233 (or 18231 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 226640028 is about 15054.5683431974. The cubic root of 226640028 is about 609.6943985674.

The spelling of 226640028 in words is "two hundred twenty-six million, six hundred forty thousand, twenty-eight".