226331640 has 48 divisors (see below), whose sum is σ = 735579000. Its totient is φ = 60355008.

The previous prime is 226331639. The next prime is 226331647. The reversal of 226331640 is 46133622.

226331640 is a `hidden beast` number, since 22 + 633 + 1 + 6 + 4 + 0 = 666.

It is a super-2 number, since 2×226331640² = 102452022530179200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226331647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313990 + ... + 314709.

Almost surely, 2^226331640 is an apocalyptic number.

226331640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

226331640 is an abundant number, since it is smaller than the sum of its proper divisors (509247360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

226331640 is a wasteful number, since it uses less digits than its factorization.

226331640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628716 (or 628709 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 226331640 is about 15044.3225171491. The cubic root of 226331640 is about 609.4177369632.

The spelling of 226331640 in words is "two hundred twenty-six million, three hundred thirty-one thousand, six hundred forty".