345524220 has 72 divisors (see below), whose sum is σ = 1073676240. Its totient is φ = 89890560.

The previous prime is 345524219. The next prime is 345524227. The reversal of 345524220 is 22425543.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345524227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16030 + ... + 30789.

It is an arithmetic number, because the mean of its divisors is an integer number (14912170).

Almost surely, 2^345524220 is an apocalyptic number.

345524220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345524220 is an abundant number, since it is smaller than the sum of its proper divisors (728152020).

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

345524220 is a wasteful number, since it uses less digits than its factorization.

345524220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46875 (or 46870 counting only the distinct ones).

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

The square root of 345524220 is about 18588.2817925703. The cubic root of 345524220 is about 701.7129612772.

Adding to 345524220 its reverse (22425543), we get a palindrome (367949763).

It can be divided in two parts, 345524 and 220, that added together give a square (345744 = 588²).

The spelling of 345524220 in words is "three hundred forty-five million, five hundred twenty-four thousand, two hundred twenty".