345728870 has 16 divisors (see below), whose sum is σ = 649369440. Its totient is φ = 132278784.

The previous prime is 345728863. The next prime is 345728897. The reversal of 345728870 is 78827543.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 751355 + ... + 751814.

It is an arithmetic number, because the mean of its divisors is an integer number (40585590).

Almost surely, 2^345728870 is an apocalyptic number.

345728870 is a deficient number, since it is larger than the sum of its proper divisors (303640570).

345728870 is a wasteful number, since it uses less digits than its factorization.

345728870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503199.

The product of its (nonzero) digits is 376320, while the sum is 44.

The square root of 345728870 is about 18593.7857898815. The cubic root of 345728870 is about 701.8514727587.

The spelling of 345728870 in words is "three hundred forty-five million, seven hundred twenty-eight thousand, eight hundred seventy".