345003220 has 36 divisors (see below), whose sum is σ = 757399860. Its totient is φ = 131997184.

The previous prime is 345003187. The next prime is 345003221. The reversal of 345003220 is 22300543.

It can be written as a sum of positive squares in 2 ways, for example, as 176730436 + 168272784 = 13294^2 + 12972^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345003221) 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 11 ways as a sum of consecutive naturals, for example, 5725 + ... + 26884.

It is an arithmetic number, because the mean of its divisors is an integer number (21038885).

Almost surely, 2^345003220 is an apocalyptic number.

It is an amenable number.

345003220 is an abundant number, since it is smaller than the sum of its proper divisors (412396640).

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

345003220 is a wasteful number, since it uses less digits than its factorization.

345003220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32664 (or 32639 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 345003220 is about 18574.2623002907. The cubic root of 345003220 is about 701.3600903456.

Adding to 345003220 its reverse (22300543), we get a palindrome (367303763).

The spelling of 345003220 in words is "three hundred forty-five million, three thousand, two hundred twenty".