345230440 has 32 divisors (see below), whose sum is σ = 781730280. Its totient is φ = 137210112.

The previous prime is 345230429. The next prime is 345230443. The reversal of 345230440 is 44032543.

It can be written as a sum of positive squares in 4 ways, for example, as 232318564 + 112911876 = 15242^2 + 10626^2 .

It is not an unprimeable number, because it can be changed into a prime (345230443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21207 + ... + 33766.

Almost surely, 2^345230440 is an apocalyptic number.

It is an amenable number.

345230440 is an abundant number, since it is smaller than the sum of its proper divisors (436499840).

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

345230440 is a wasteful number, since it uses less digits than its factorization.

345230440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55141 (or 55137 counting only the distinct ones).

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

The square root of 345230440 is about 18580.3778217775. The cubic root of 345230440 is about 701.5140290700.

Adding to 345230440 its reverse (44032543), we get a palindrome (389262983).

The spelling of 345230440 in words is "three hundred forty-five million, two hundred thirty thousand, four hundred forty".