146940228 has 72 divisors (see below), whose sum is σ = 384294456. Its totient is φ = 47308800.

The previous prime is 146940193. The next prime is 146940229. The reversal of 146940228 is 822049641.

It can be written as a sum of positive squares in 4 ways, for example, as 21455424 + 125484804 = 4632^2 + 11202^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 146940192 and 146940201.

It is not an unprimeable number, because it can be changed into a prime (146940229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166348 + ... + 167228.

It is an arithmetic number, because the mean of its divisors is an integer number (5337423).

Almost surely, 2^146940228 is an apocalyptic number.

146940228 is a gapful number since it is divisible by the number (18) 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 146940228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192147228).

146940228 is an abundant number, since it is smaller than the sum of its proper divisors (237354228).

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

146940228 is a wasteful number, since it uses less digits than its factorization.

146940228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045 (or 1040 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 146940228 is about 12121.8904466259. The cubic root of 146940228 is about 527.6916674320.

Adding to 146940228 its reverse (822049641), we get a palindrome (968989869).

The spelling of 146940228 in words is "one hundred forty-six million, nine hundred forty thousand, two hundred twenty-eight".