218450080 has 24 divisors (see below), whose sum is σ = 516088692. Its totient is φ = 87379968.

The previous prime is 218450077. The next prime is 218450081. The reversal of 218450080 is 80054812.

It can be written as a sum of positive squares in 2 ways, for example, as 200165904 + 18284176 = 14148^2 + 4276^2 .

It is not an unprimeable number, because it can be changed into a prime (218450081) 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, 682497 + ... + 682816.

Almost surely, 2^218450080 is an apocalyptic number.

218450080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

218450080 is an abundant number, since it is smaller than the sum of its proper divisors (297638612).

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

218450080 is a wasteful number, since it uses less digits than its factorization.

218450080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365328 (or 1365320 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 218450080 is about 14780.0568334496. The cubic root of 218450080 is about 602.2600687191.

The spelling of 218450080 in words is "two hundred eighteen million, four hundred fifty thousand, eighty".