345289020 has 24 divisors (see below), whose sum is σ = 966809424. Its totient is φ = 92077056.

The previous prime is 345288953. The next prime is 345289027. The reversal of 345289020 is 20982543.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345289027) 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, 2877349 + ... + 2877468.

It is an arithmetic number, because the mean of its divisors is an integer number (40283726).

Almost surely, 2^345289020 is an apocalyptic number.

345289020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345289020 is an abundant number, since it is smaller than the sum of its proper divisors (621520404).

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

345289020 is a wasteful number, since it uses less digits than its factorization.

345289020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5754829 (or 5754827 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 345289020 is about 18581.9541491201. The cubic root of 345289020 is about 701.5537053393.

The spelling of 345289020 in words is "three hundred forty-five million, two hundred eighty-nine thousand, twenty".