345528280 has 16 divisors (see below), whose sum is σ = 777438720. Its totient is φ = 138211296.

The previous prime is 345528233. The next prime is 345528283. The reversal of 345528280 is 82825543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345528283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4319064 + ... + 4319143.

It is an arithmetic number, because the mean of its divisors is an integer number (48589920).

Almost surely, 2^345528280 is an apocalyptic number.

It is an amenable number.

345528280 is an abundant number, since it is smaller than the sum of its proper divisors (431910440).

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

345528280 is a wasteful number, since it uses less digits than its factorization.

345528280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8638218 (or 8638214 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 345528280 is about 18588.3910008371. The cubic root of 345528280 is about 701.7157097034.

The spelling of 345528280 in words is "three hundred forty-five million, five hundred twenty-eight thousand, two hundred eighty".