226196781 has 16 divisors (see below), whose sum is σ = 330350400. Its totient is φ = 137032448.

The previous prime is 226196701. The next prime is 226196791. The reversal of 226196781 is 187691622.

It is a cyclic number.

It is not a de Polignac number, because 226196781 - 2¹⁰ = 226195757 is a prime.

It is a super-2 number, since 2×226196781² = 102329967469523922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226196701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74991 + ... + 77948.

It is an arithmetic number, because the mean of its divisors is an integer number (20646900).

Almost surely, 2^226196781 is an apocalyptic number.

It is an amenable number.

226196781 is a deficient number, since it is larger than the sum of its proper divisors (104153619).

226196781 is a wasteful number, since it uses less digits than its factorization.

226196781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152988.

The product of its digits is 72576, while the sum is 42.

The square root of 226196781 is about 15039.8397930297. The cubic root of 226196781 is about 609.2966730305.

The spelling of 226196781 in words is "two hundred twenty-six million, one hundred ninety-six thousand, seven hundred eighty-one".