218240470 has 16 divisors (see below), whose sum is σ = 448951968. Its totient is φ = 74825280.

The previous prime is 218240461. The next prime is 218240501. The reversal of 218240470 is 74042812.

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, 1558791 + ... + 1558930.

It is an arithmetic number, because the mean of its divisors is an integer number (28059498).

Almost surely, 2^218240470 is an apocalyptic number.

218240470 is an abundant number, since it is smaller than the sum of its proper divisors (230711498).

218240470 is a wasteful number, since it uses less digits than its factorization.

218240470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117735.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 218240470 is about 14772.9641575413. The cubic root of 218240470 is about 602.0673776604.

The spelling of 218240470 in words is "two hundred eighteen million, two hundred forty thousand, four hundred seventy".