2214864 has 50 divisors (see below), whose sum is σ = 6414210. Its totient is φ = 737856.

The previous prime is 2214847. The next prime is 2214869. The reversal of 2214864 is 4684122.

It can be written as a sum of positive squares in only one way, i.e., 1587600 + 627264 = 1260^2 + 792^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2214869) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 442 + ... + 2150.

2^2214864 is an apocalyptic number.

2214864 is a gapful number since it is divisible by the number (24) 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 2214864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3207105).

2214864 is an abundant number, since it is smaller than the sum of its proper divisors (4199346).

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

2214864 is a wasteful number, since it uses less digits than its factorization.

2214864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729 (or 1714 counting only the distinct ones).

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

The square root of 2214864 is about 1488.2419158188. The cubic root of 2214864 is about 130.3513964422.

Adding to 2214864 its reverse (4684122), we get a palindrome (6898986).

The spelling of 2214864 in words is "two million, two hundred fourteen thousand, eight hundred sixty-four".