345232420 has 48 divisors (see below), whose sum is σ = 785530368. Its totient is φ = 126691200.

The previous prime is 345232387. The next prime is 345232421. The reversal of 345232420 is 24232543.

It is not an unprimeable number, because it can be changed into a prime (345232421) 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, 39445 + ... + 47395.

It is an arithmetic number, because the mean of its divisors is an integer number (16365216).

Almost surely, 2^345232420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345232420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392765184).

345232420 is an abundant number, since it is smaller than the sum of its proper divisors (440297948).

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

345232420 is a wasteful number, since it uses less digits than its factorization.

345232420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8140 (or 8138 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 345232420 is about 18580.4311037177. The cubic root of 345232420 is about 701.5153701985.

Adding to 345232420 its reverse (24232543), we get a palindrome (369464963).

The spelling of 345232420 in words is "three hundred forty-five million, two hundred thirty-two thousand, four hundred twenty".