226840387 has 2 divisors, whose sum is σ = 226840388. Its totient is φ = 226840386.

The previous prime is 226840379. The next prime is 226840409. The reversal of 226840387 is 783048622.

226840387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 226840387 - 2³ = 226840379 is a prime.

It is a super-2 number, since 2×226840387² = 102913122348619538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (226840357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113420193 + 113420194.

It is an arithmetic number, because the mean of its divisors is an integer number (113420194).

Almost surely, 2^226840387 is an apocalyptic number.

226840387 is a deficient number, since it is larger than the sum of its proper divisors (1).

226840387 is an equidigital number, since it uses as much as digits as its factorization.

226840387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 226840387 is about 15061.2212984207. The cubic root of 226840387 is about 609.8740105292.

The spelling of 226840387 in words is "two hundred twenty-six million, eight hundred forty thousand, three hundred eighty-seven".