18022464 has 84 divisors (see below), whose sum is σ = 52541424. Its totient is φ = 5905152.

The previous prime is 18022463. The next prime is 18022471. The reversal of 18022464 is 46422081.

18022464 is a `hidden beast` number, since 180 + 22 + 464 = 666.

It is not an unprimeable number, because it can be changed into a prime (18022463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38359 + ... + 38825.

Almost surely, 2^18022464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18022464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26270712).

18022464 is an abundant number, since it is smaller than the sum of its proper divisors (34518960).

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

18022464 is a wasteful number, since it uses less digits than its factorization.

18022464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 18022464 is about 4245.2872694318. The cubic root of 18022464 is about 262.1831169408.

The spelling of 18022464 in words is "eighteen million, twenty-two thousand, four hundred sixty-four".