226742891 has 4 divisors (see below), whose sum is σ = 229849032. Its totient is φ = 223636752.

The previous prime is 226742869. The next prime is 226742927. The reversal of 226742891 is 198247622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 198247622 = 2 ⋅99123811.

It is a cyclic number.

It is not a de Polignac number, because 226742891 - 2²² = 222548587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226742491) 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, 1552961 + ... + 1553106.

It is an arithmetic number, because the mean of its divisors is an integer number (57462258).

Almost surely, 2^226742891 is an apocalyptic number.

226742891 is a deficient number, since it is larger than the sum of its proper divisors (3106141).

226742891 is an equidigital number, since it uses as much as digits as its factorization.

226742891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106140.

The product of its digits is 96768, while the sum is 41.

The square root of 226742891 is about 15057.9842940548. The cubic root of 226742891 is about 609.7866233903.

The spelling of 226742891 in words is "two hundred twenty-six million, seven hundred forty-two thousand, eight hundred ninety-one".