218428348 has 12 divisors (see below), whose sum is σ = 395430840. Its totient is φ = 105448112.

The previous prime is 218428321. The next prime is 218428363. The reversal of 218428348 is 843824812.

It is a self number, because there is not a number n which added to its sum of digits gives 218428348.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941386 + ... + 941617.

It is an arithmetic number, because the mean of its divisors is an integer number (32952570).

Almost surely, 2^218428348 is an apocalyptic number.

It is an amenable number.

218428348 is a deficient number, since it is larger than the sum of its proper divisors (177002492).

218428348 is a wasteful number, since it uses less digits than its factorization.

218428348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883036 (or 1883034 counting only the distinct ones).

The product of its digits is 98304, while the sum is 40.

The square root of 218428348 is about 14779.3216353120. The cubic root of 218428348 is about 602.2400965744.

The spelling of 218428348 in words is "two hundred eighteen million, four hundred twenty-eight thousand, three hundred forty-eight".