345021144 has 64 divisors (see below), whose sum is σ = 944697600. Its totient is φ = 104355456.

The previous prime is 345021107. The next prime is 345021167. The reversal of 345021144 is 441120543.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9037 + ... + 27779.

It is an arithmetic number, because the mean of its divisors is an integer number (14760900).

Almost surely, 2^345021144 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 345021144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (472348800).

345021144 is an abundant number, since it is smaller than the sum of its proper divisors (599676456).

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

345021144 is a wasteful number, since it uses less digits than its factorization.

345021144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18824 (or 18820 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 345021144 is about 18574.7447896330. The cubic root of 345021144 is about 701.3722360878.

Adding to 345021144 its reverse (441120543), we get a palindrome (786141687).

The spelling of 345021144 in words is "three hundred forty-five million, twenty-one thousand, one hundred forty-four".