226121378 has 42 divisors (see below), whose sum is σ = 408888603. Its totient is φ = 93783060.

The previous prime is 226121293. The next prime is 226121417. The reversal of 226121378 is 873121622.

It can be written as a sum of positive squares in only one way, i.e., 113060689 + 113060689 = 10633^2 + 10633^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=10633.

It is a super-2 number, since 2×226121378² = 102261755177237768, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 7294223 + ... + 7294253.

Almost surely, 2^226121378 is an apocalyptic number.

226121378 is a deficient number, since it is larger than the sum of its proper divisors (182767225).

226121378 is an frugal number, since it uses more digits than its factorization.

226121378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 40 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 226121378 is about 15037.3328087131. The cubic root of 226121378 is about 609.2289622187.

Multiplying 226121378 by its sum of digits (32), we get a square (7235884096 = 85064²).

The spelling of 226121378 in words is "two hundred twenty-six million, one hundred twenty-one thousand, three hundred seventy-eight".