345490784 has 48 divisors (see below), whose sum is σ = 714147840. Its totient is φ = 164311680.

The previous prime is 345490781. The next prime is 345490807. The reversal of 345490784 is 487094543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345490781) 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, 55577 + ... + 61479.

It is an arithmetic number, because the mean of its divisors is an integer number (14878080).

Almost surely, 2^345490784 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 345490784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357073920).

345490784 is an abundant number, since it is smaller than the sum of its proper divisors (368657056).

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

345490784 is a wasteful number, since it uses less digits than its factorization.

345490784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6003 (or 5995 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 345490784 is about 18587.3823869850. The cubic root of 345490784 is about 701.6903258824.

The spelling of 345490784 in words is "three hundred forty-five million, four hundred ninety thousand, seven hundred eighty-four".