227826981 has 6 divisors (see below), whose sum is σ = 329083430. Its totient is φ = 151884648.

The previous prime is 227826953. The next prime is 227826997. The reversal of 227826981 is 189628722.

227826981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 152917956 + 74909025 = 12366^2 + 8655^2 .

It is not a de Polignac number, because 227826981 - 2¹⁰ = 227825957 is a prime.

It is a super-2 number, since 2×227826981² = 103810266543148722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227826481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12657046 + ... + 12657063.

Almost surely, 2^227826981 is an apocalyptic number.

It is an amenable number.

227826981 is a deficient number, since it is larger than the sum of its proper divisors (101256449).

227826981 is a wasteful number, since it uses less digits than its factorization.

227826981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25314115 (or 25314112 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 227826981 is about 15093.9385516173. The cubic root of 227826981 is about 610.7569041943.

The spelling of 227826981 in words is "two hundred twenty-seven million, eight hundred twenty-six thousand, nine hundred eighty-one".