345232240 has 80 divisors (see below), whose sum is σ = 843115680. Its totient is φ = 131281920.

The previous prime is 345232219. The next prime is 345232247. The reversal of 345232240 is 42232543.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345232247) 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, 154330 + ... + 156550.

It is an arithmetic number, because the mean of its divisors is an integer number (10538946).

Almost surely, 2^345232240 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 345232240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421557840).

345232240 is an abundant number, since it is smaller than the sum of its proper divisors (497883440).

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

345232240 is a wasteful number, since it uses less digits than its factorization.

345232240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330 (or 2324 counting only the distinct ones).

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

The square root of 345232240 is about 18580.4262599113. The cubic root of 345232240 is about 701.5152482780.

Adding to 345232240 its reverse (42232543), we get a palindrome (387464783).

It can be divided in two parts, 34523 and 2240, that added together give a palindrome (36763).

The spelling of 345232240 in words is "three hundred forty-five million, two hundred thirty-two thousand, two hundred forty".