222145746 has 16 divisors (see below), whose sum is σ = 445934208. Its totient is φ = 73774800.

The previous prime is 222145741. The next prime is 222145751. The reversal of 222145746 is 647541222.

It is an interprime number because it is at equal distance from previous prime (222145741) and next prime (222145751).

It is not an unprimeable number, because it can be changed into a prime (222145741) 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, 66685 + ... + 69936.

It is an arithmetic number, because the mean of its divisors is an integer number (27870888).

Almost surely, 2^222145746 is an apocalyptic number.

222145746 is an abundant number, since it is smaller than the sum of its proper divisors (223788462).

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

222145746 is a wasteful number, since it uses less digits than its factorization.

222145746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136897.

The product of its digits is 26880, while the sum is 33.

The square root of 222145746 is about 14904.5545387979. The cubic root of 222145746 is about 605.6373730460.

Adding to 222145746 its reverse (647541222), we get a palindrome (869686968).

The spelling of 222145746 in words is "two hundred twenty-two million, one hundred forty-five thousand, seven hundred forty-six".