345400220 has 48 divisors (see below), whose sum is σ = 837835488. Its totient is φ = 118210560.

The previous prime is 345400201. The next prime is 345400229. The reversal of 345400220 is 22004543.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 345400192 and 345400201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345400229) 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, 42437 + ... + 49916.

It is an arithmetic number, because the mean of its divisors is an integer number (17454906).

Almost surely, 2^345400220 is an apocalyptic number.

It is an amenable number.

345400220 is an abundant number, since it is smaller than the sum of its proper divisors (492435268).

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

345400220 is a wasteful number, since it uses less digits than its factorization.

345400220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92390 (or 92388 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 345400220 is about 18584.9460585712. The cubic root of 345400220 is about 701.6290088236.

Adding to 345400220 its reverse (22004543), we get a palindrome (367404763).

The spelling of 345400220 in words is "three hundred forty-five million, four hundred thousand, two hundred twenty".