345510140 has 72 divisors (see below), whose sum is σ = 773085600. Its totient is φ = 129458560.

The previous prime is 345510119. The next prime is 345510149. The reversal of 345510140 is 41015543.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345510149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2318786 + ... + 2318934.

It is an arithmetic number, because the mean of its divisors is an integer number (10737300).

Almost surely, 2^345510140 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 345510140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386542800).

345510140 is an abundant number, since it is smaller than the sum of its proper divisors (427575460).

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

345510140 is a wasteful number, since it uses less digits than its factorization.

345510140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 345510140 is about 18587.9030554821. The cubic root of 345510140 is about 701.7034296224.

Adding to 345510140 its reverse (41015543), we get a palindrome (386525683).

The spelling of 345510140 in words is "three hundred forty-five million, five hundred ten thousand, one hundred forty".