345373220 has 48 divisors (see below), whose sum is σ = 739144560. Its totient is φ = 135530496.

The previous prime is 345373219. The next prime is 345373229. The reversal of 345373220 is 22373543.

It can be written as a sum of positive squares in 8 ways, for example, as 85969984 + 259403236 = 9272^2 + 16106^2 .

It is a super-2 number, since 2×345373220² = 238565322186336800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (345373229) 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, 333824 + ... + 334856.

It is an arithmetic number, because the mean of its divisors is an integer number (15398845).

Almost surely, 2^345373220 is an apocalyptic number.

It is an amenable number.

345373220 is an abundant number, since it is smaller than the sum of its proper divisors (393771340).

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

345373220 is a wasteful number, since it uses less digits than its factorization.

345373220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344 (or 1342 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 29.

The square root of 345373220 is about 18584.2196500149. The cubic root of 345373220 is about 701.6107261901.

The spelling of 345373220 in words is "three hundred forty-five million, three hundred seventy-three thousand, two hundred twenty".