345488140 has 48 divisors (see below), whose sum is σ = 755514144. Its totient is φ = 132595200.

The previous prime is 345488137. The next prime is 345488141. The reversal of 345488140 is 41884543.

It is a self number, because there is not a number n which added to its sum of digits gives 345488140.

It is not an unprimeable number, because it can be changed into a prime (345488141) 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, 46567 + ... + 53473.

It is an arithmetic number, because the mean of its divisors is an integer number (15739878).

Almost surely, 2^345488140 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 345488140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377757072).

345488140 is an abundant number, since it is smaller than the sum of its proper divisors (410026004).

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

345488140 is a wasteful number, since it uses less digits than its factorization.

345488140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7018 (or 7016 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 345488140 is about 18587.3112633323. The cubic root of 345488140 is about 701.6885358935.

The spelling of 345488140 in words is "three hundred forty-five million, four hundred eighty-eight thousand, one hundred forty".