145422222 has 16 divisors (see below), whose sum is σ = 317284992. Its totient is φ = 44067320.

The previous prime is 145422187. The next prime is 145422229. The reversal of 145422222 is 222224541.

It is a super-2 number, since 2×145422222² = 42295245302834568, which contains 22 as substring.

145422222 is a modest number, since divided by 22222 gives 1454 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 145422192 and 145422201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145422229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1101618 + ... + 1101749.

It is an arithmetic number, because the mean of its divisors is an integer number (19830312).

Almost surely, 2^145422222 is an apocalyptic number.

145422222 is an abundant number, since it is smaller than the sum of its proper divisors (171862770).

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

145422222 is a wasteful number, since it uses less digits than its factorization.

145422222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203383.

The product of its digits is 2560, while the sum is 24.

The square root of 145422222 is about 12059.1136490208. The cubic root of 145422222 is about 525.8682196247.

Adding to 145422222 its reverse (222224541), we get a palindrome (367646763).

The spelling of 145422222 in words is "one hundred forty-five million, four hundred twenty-two thousand, two hundred twenty-two".