145222230 has 32 divisors (see below), whose sum is σ = 363688704. Its totient is φ = 37042016.

The previous prime is 145222201. The next prime is 145222237. The reversal of 145222230 is 32222541.

It is a junction number, because it is equal to n+sod(n) for n = 145222197 and 145222206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145222237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104544 + ... + 105923.

It is an arithmetic number, because the mean of its divisors is an integer number (11365272).

Almost surely, 2^145222230 is an apocalyptic number.

145222230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145222230 is an abundant number, since it is smaller than the sum of its proper divisors (218466474).

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

145222230 is a wasteful number, since it uses less digits than its factorization.

145222230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210500.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 145222230 is about 12050.8186443909. The cubic root of 145222230 is about 525.6270421672.

Adding to 145222230 its reverse (32222541), we get a palindrome (177444771).

The spelling of 145222230 in words is "one hundred forty-five million, two hundred twenty-two thousand, two hundred thirty".