218672748 has 144 divisors (see below), whose sum is σ = 672672000. Its totient is φ = 58506624.

The previous prime is 218672747. The next prime is 218672771. The reversal of 218672748 is 847276812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218672743) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 521683 + ... + 522101.

Almost surely, 2^218672748 is an apocalyptic number.

218672748 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 218672748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336336000).

218672748 is an abundant number, since it is smaller than the sum of its proper divisors (453999252).

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

218672748 is a wasteful number, since it uses less digits than its factorization.

218672748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564 (or 559 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 218672748 is about 14787.5876328764. The cubic root of 218672748 is about 602.4646288125.

The spelling of 218672748 in words is "two hundred eighteen million, six hundred seventy-two thousand, seven hundred forty-eight".