146221944 has 128 divisors (see below), whose sum is σ = 419904000. Its totient is φ = 42022400.

The previous prime is 146221931. The next prime is 146221961. The reversal of 146221944 is 449122641.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 543442 + ... + 543710.

It is an arithmetic number, because the mean of its divisors is an integer number (3280500).

Almost surely, 2^146221944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 146221944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209952000).

146221944 is an abundant number, since it is smaller than the sum of its proper divisors (273682056).

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

146221944 is a wasteful number, since it uses less digits than its factorization.

146221944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 385 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 146221944 is about 12092.2265939735. The cubic root of 146221944 is about 526.8304288764.

The spelling of 146221944 in words is "one hundred forty-six million, two hundred twenty-one thousand, nine hundred forty-four".