145238222 has 16 divisors (see below), whose sum is σ = 220663872. Its totient is φ = 71688960.

The previous prime is 145238213. The next prime is 145238227. The reversal of 145238222 is 222832541.

It is a super-2 number, since 2×145238222² = 42188282259442568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145238227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62363 + ... + 64649.

It is an arithmetic number, because the mean of its divisors is an integer number (13791492).

Almost surely, 2^145238222 is an apocalyptic number.

145238222 is a deficient number, since it is larger than the sum of its proper divisors (75425650).

145238222 is a wasteful number, since it uses less digits than its factorization.

145238222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2683.

The product of its digits is 7680, while the sum is 29.

The square root of 145238222 is about 12051.4821495117. The cubic root of 145238222 is about 525.6463356301.

The spelling of 145238222 in words is "one hundred forty-five million, two hundred thirty-eight thousand, two hundred twenty-two".