345021400 has 48 divisors (see below), whose sum is σ = 804636000. Its totient is φ = 137585280.

The previous prime is 345021389. The next prime is 345021401. The reversal of 345021400 is 4120543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345021401) 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 11 ways as a sum of consecutive naturals, for example, 67329 + ... + 72271.

It is an arithmetic number, because the mean of its divisors is an integer number (16763250).

Almost surely, 2^345021400 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 345021400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402318000).

345021400 is an abundant number, since it is smaller than the sum of its proper divisors (459614600).

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

345021400 is a wasteful number, since it uses less digits than its factorization.

345021400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5308 (or 5299 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 345021400 is about 18574.7516807090. The cubic root of 345021400 is about 701.3724095566.

Adding to 345021400 its reverse (4120543), we get a palindrome (349141943).

The spelling of 345021400 in words is "three hundred forty-five million, twenty-one thousand, four hundred".