345220544 has 28 divisors (see below), whose sum is σ = 690457344. Its totient is φ = 171247104.

The previous prime is 345220543. The next prime is 345220571. The reversal of 345220544 is 445022543.

345220544 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345220541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13109 + ... + 29364.

Almost surely, 2^345220544 is an apocalyptic number.

It is an amenable number.

345220544 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

345220544 is a wasteful number, since it uses less digits than its factorization.

345220544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42612 (or 42602 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 345220544 is about 18580.1115174264. Note that the first 3 decimals coincide. The cubic root of 345220544 is about 701.5073260601.

The spelling of 345220544 in words is "three hundred forty-five million, two hundred twenty thousand, five hundred forty-four".