226891390 has 32 divisors (see below), whose sum is σ = 446155776. Its totient is φ = 82390560.

The previous prime is 226891381. The next prime is 226891393. The reversal of 226891390 is 93198622.

It is a happy number.

It is a super-2 number, since 2×226891390² = 102959405712264200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226891393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142539 + ... + 144121.

It is an arithmetic number, because the mean of its divisors is an integer number (13942368).

Almost surely, 2^226891390 is an apocalyptic number.

226891390 is a deficient number, since it is larger than the sum of its proper divisors (219264386).

226891390 is a wasteful number, since it uses less digits than its factorization.

226891390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 226891390 is about 15062.9143926400. The cubic root of 226891390 is about 609.9197153140.

The spelling of 226891390 in words is "two hundred twenty-six million, eight hundred ninety-one thousand, three hundred ninety".