2186464 has 48 divisors (see below), whose sum is σ = 5056128. Its totient is φ = 911232.

The previous prime is 2186453. The next prime is 2186467. The reversal of 2186464 is 4646812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2186467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9519 + ... + 9745.

It is an arithmetic number, because the mean of its divisors is an integer number (105336).

2^2186464 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 2186464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2528064).

2186464 is an abundant number, since it is smaller than the sum of its proper divisors (2869664).

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

2186464 is a wasteful number, since it uses less digits than its factorization.

2186464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 279 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 2186464 is about 1478.6696723745. The cubic root of 2186464 is about 129.7918562669.

The spelling of 2186464 in words is "two million, one hundred eighty-six thousand, four hundred sixty-four".