226722381 has 8 divisors (see below), whose sum is σ = 302664480. Its totient is φ = 150964272.

The previous prime is 226722361. The next prime is 226722389. The reversal of 226722381 is 183227622.

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

It is not a de Polignac number, because 226722381 - 2²¹ = 224625229 is a prime.

It is a super-2 number, since 2×226722381² = 102806076092618322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226722389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43095 + ... + 48068.

It is an arithmetic number, because the mean of its divisors is an integer number (37833060).

Almost surely, 2^226722381 is an apocalyptic number.

It is an amenable number.

226722381 is a deficient number, since it is larger than the sum of its proper divisors (75942099).

226722381 is an equidigital number, since it uses as much as digits as its factorization.

226722381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91995.

The product of its digits is 16128, while the sum is 33.

The square root of 226722381 is about 15057.3032446053. The cubic root of 226722381 is about 609.7682367782.

The spelling of 226722381 in words is "two hundred twenty-six million, seven hundred twenty-two thousand, three hundred eighty-one".