2218464 has 36 divisors (see below), whose sum is σ = 6309576. Its totient is φ = 739392.

The previous prime is 2218451. The next prime is 2218519. The reversal of 2218464 is 4648122.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3564 + ... + 4139.

It is an arithmetic number, because the mean of its divisors is an integer number (175266).

2^2218464 is an apocalyptic number.

2218464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2218464 is an abundant number, since it is smaller than the sum of its proper divisors (4091112).

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

2218464 is a wasteful number, since it uses less digits than its factorization.

2218464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7719 (or 7708 counting only the distinct ones).

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

The square root of 2218464 is about 1489.4509055353. The cubic root of 2218464 is about 130.4219818162.

The spelling of 2218464 in words is "two million, two hundred eighteen thousand, four hundred sixty-four".