226990 has 8 divisors (see below), whose sum is σ = 408600. Its totient is φ = 90792.

The previous prime is 226943. The next prime is 226991. The reversal of 226990 is 99622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11340 + ... + 11359.

It is an arithmetic number, because the mean of its divisors is an integer number (51075).

2²²⁶⁹⁹⁰ is an apocalyptic number.

226990 is a deficient number, since it is larger than the sum of its proper divisors (181610).

226990 is a wasteful number, since it uses less digits than its factorization.

226990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22706.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 226990 is about 476.4346754803. The cubic root of 226990 is about 61.0008062242. Note that the first 3 decimals are identical.

The spelling of 226990 in words is "two hundred twenty-six thousand, nine hundred ninety".