146221968 has 40 divisors (see below), whose sum is σ = 378799168. Its totient is φ = 48604032.

The previous prime is 146221963. The next prime is 146221991. The reversal of 146221968 is 869122641.

It is not an unprimeable number, because it can be changed into a prime (146221961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13821 + ... + 21987.

Almost surely, 2^146221968 is an apocalyptic number.

It is an amenable number.

146221968 is an abundant number, since it is smaller than the sum of its proper divisors (232577200).

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

146221968 is a wasteful number, since it uses less digits than its factorization.

146221968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8551 (or 8545 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 146221968 is about 12092.2275863465. The cubic root of 146221968 is about 526.8304577000.

The spelling of 146221968 in words is "one hundred forty-six million, two hundred twenty-one thousand, nine hundred sixty-eight".