345445432 has 8 divisors (see below), whose sum is σ = 647710200. Its totient is φ = 172722712.

The previous prime is 345445333. The next prime is 345445439. The reversal of 345445432 is 234544543.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345445439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21590332 + ... + 21590347.

It is an arithmetic number, because the mean of its divisors is an integer number (80963775).

Almost surely, 2^345445432 is an apocalyptic number.

It is an amenable number.

345445432 is a deficient number, since it is larger than the sum of its proper divisors (302264768).

345445432 is a wasteful number, since it uses less digits than its factorization.

345445432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43180685 (or 43180681 counting only the distinct ones).

The product of its digits is 115200, while the sum is 34.

The square root of 345445432 is about 18586.1623795769. The cubic root of 345445432 is about 701.6596212985.

Adding to 345445432 its reverse (234544543), we get a palindrome (579989975).

The spelling of 345445432 in words is "three hundred forty-five million, four hundred forty-five thousand, four hundred thirty-two".