145306222 has 8 divisors (see below), whose sum is σ = 218012256. Its totient is φ = 72635472.

The previous prime is 145306177. The next prime is 145306229. The reversal of 145306222 is 222603541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×145306222² = 42227796303826568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145306229) 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 3 ways as a sum of consecutive naturals, for example, 7563 + ... + 18649.

It is an arithmetic number, because the mean of its divisors is an integer number (27251532).

Almost surely, 2^145306222 is an apocalyptic number.

145306222 is a deficient number, since it is larger than the sum of its proper divisors (72706034).

145306222 is a wasteful number, since it uses less digits than its factorization.

145306222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17642.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 145306222 is about 12054.3030491190. The cubic root of 145306222 is about 525.7283580559.

Adding to 145306222 its reverse (222603541), we get a palindrome (367909763).

The spelling of 145306222 in words is "one hundred forty-five million, three hundred six thousand, two hundred twenty-two".