226619988 has 48 divisors (see below), whose sum is σ = 611130240. Its totient is φ = 64018944.

The previous prime is 226619983. The next prime is 226620029. The reversal of 226619988 is 889916622.

It is a super-2 number, since 2×226619988² = 102713237922240288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 226619988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226619983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7681 + ... + 22632.

It is an arithmetic number, because the mean of its divisors is an integer number (12731880).

Almost surely, 2^226619988 is an apocalyptic number.

226619988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

226619988 is an abundant number, since it is smaller than the sum of its proper divisors (384510252).

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

226619988 is a wasteful number, since it uses less digits than its factorization.

226619988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30416 (or 30414 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 226619988 is about 15053.9027497855. The cubic root of 226619988 is about 609.6764278732.

The spelling of 226619988 in words is "two hundred twenty-six million, six hundred nineteen thousand, nine hundred eighty-eight".