345927780 has 96 divisors (see below), whose sum is σ = 1174078080. Its totient is φ = 83859840.

The previous prime is 345927779. The next prime is 345927809. The reversal of 345927780 is 87729543.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 23179 + ... + 35058.

It is an arithmetic number, because the mean of its divisors is an integer number (12229980).

Almost surely, 2^345927780 is an apocalyptic number.

345927780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345927780 is an abundant number, since it is smaller than the sum of its proper divisors (828150300).

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

345927780 is a wasteful number, since it uses less digits than its factorization.

345927780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58266 (or 58258 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 345927780 is about 18599.1338508007. The cubic root of 345927780 is about 701.9860469138.

The spelling of 345927780 in words is "three hundred forty-five million, nine hundred twenty-seven thousand, seven hundred eighty".