345540222 has 32 divisors (see below), whose sum is σ = 772131360. Its totient is φ = 114540480.

The previous prime is 345540211. The next prime is 345540227. The reversal of 345540222 is 222045543.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345540227) 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, 7903 + ... + 27450.

It is an arithmetic number, because the mean of its divisors is an integer number (24129105).

Almost surely, 2^345540222 is an apocalyptic number.

345540222 is an abundant number, since it is smaller than the sum of its proper divisors (426591138).

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

345540222 is a wasteful number, since it uses less digits than its factorization.

345540222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35545 (or 35539 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 345540222 is about 18588.7122200544. The cubic root of 345540222 is about 701.7237937426.

Adding to 345540222 its reverse (222045543), we get a palindrome (567585765).

The spelling of 345540222 in words is "three hundred forty-five million, five hundred forty thousand, two hundred twenty-two".