146030220 has 144 divisors (see below), whose sum is σ = 528353280. Its totient is φ = 31920768.

The previous prime is 146030201. The next prime is 146030263. The reversal of 146030220 is 22030641.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 146030193 and 146030202.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 26461 + ... + 31499.

It is an arithmetic number, because the mean of its divisors is an integer number (3669120).

Almost surely, 2^146030220 is an apocalyptic number.

146030220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 146030220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264176640).

146030220 is an abundant number, since it is smaller than the sum of its proper divisors (382323060).

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

146030220 is a wasteful number, since it uses less digits than its factorization.

146030220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5084 (or 5079 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 146030220 is about 12084.2964213892. The cubic root of 146030220 is about 526.6000708046.

Adding to 146030220 its reverse (22030641), we get a palindrome (168060861).

The spelling of 146030220 in words is "one hundred forty-six million, thirty thousand, two hundred twenty".