146640226 has 8 divisors (see below), whose sum is σ = 229523904. Its totient is φ = 70132260.

The previous prime is 146640209. The next prime is 146640229. The reversal of 146640226 is 622046641.

146640226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (146640229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1593870 + ... + 1593961.

It is an arithmetic number, because the mean of its divisors is an integer number (28690488).

Almost surely, 2^146640226 is an apocalyptic number.

146640226 is a deficient number, since it is larger than the sum of its proper divisors (82883678).

146640226 is a wasteful number, since it uses less digits than its factorization.

146640226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187856.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 146640226 is about 12109.5097340892. The cubic root of 146640226 is about 527.3323004123.

Adding to 146640226 its reverse (622046641), we get a palindrome (768686867).

The spelling of 146640226 in words is "one hundred forty-six million, six hundred forty thousand, two hundred twenty-six".