218460450 has 48 divisors (see below), whose sum is σ = 583462656. Its totient is φ = 53774400.

The previous prime is 218460439. The next prime is 218460479. The reversal of 218460450 is 54064812.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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, 54066 + ... + 57965.

It is an arithmetic number, because the mean of its divisors is an integer number (12155472).

Almost surely, 2^218460450 is an apocalyptic number.

218460450 is an abundant number, since it is smaller than the sum of its proper divisors (365002206).

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

218460450 is a wasteful number, since it uses less digits than its factorization.

218460450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112059 (or 112054 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 218460450 is about 14780.4076398454. The cubic root of 218460450 is about 602.2695984907.

The spelling of 218460450 in words is "two hundred eighteen million, four hundred sixty thousand, four hundred fifty".