218467480 has 96 divisors (see below), whose sum is σ = 623849040. Its totient is φ = 68087040.

The previous prime is 218467471. The next prime is 218467481. The reversal of 218467480 is 84764812.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218467481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16494 + ... + 26626.

Almost surely, 2^218467480 is an apocalyptic number.

218467480 is a gapful number since it is divisible by the number (20) 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 218467480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311924520).

218467480 is an abundant number, since it is smaller than the sum of its proper divisors (405381560).

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

218467480 is a wasteful number, since it uses less digits than its factorization.

218467480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10169 (or 10158 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 218467480 is about 14780.6454527534. The cubic root of 218467480 is about 602.2760587140.

The spelling of 218467480 in words is "two hundred eighteen million, four hundred sixty-seven thousand, four hundred eighty".