218934734 has 8 divisors (see below), whose sum is σ = 333785928. Its totient is φ = 107672760.

The previous prime is 218934731. The next prime is 218934757. The reversal of 218934734 is 437439812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 218934691 and 218934700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218934731) 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, 897152 + ... + 897395.

It is an arithmetic number, because the mean of its divisors is an integer number (41723241).

Almost surely, 2^218934734 is an apocalyptic number.

218934734 is a deficient number, since it is larger than the sum of its proper divisors (114851194).

218934734 is a wasteful number, since it uses less digits than its factorization.

218934734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794610.

The product of its digits is 145152, while the sum is 41.

The square root of 218934734 is about 14796.4432888448. The cubic root of 218934734 is about 602.7051317377.

The spelling of 218934734 in words is "two hundred eighteen million, nine hundred thirty-four thousand, seven hundred thirty-four".