1806464 has 32 divisors (see below), whose sum is σ = 3929040. Its totient is φ = 820480.

The previous prime is 1806461. The next prime is 1806479. The reversal of 1806464 is 4646081.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (1806461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 767 + ... + 2049.

2^1806464 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 1806464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1964520).

1806464 is an abundant number, since it is smaller than the sum of its proper divisors (2122576).

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

1806464 is a wasteful number, since it uses less digits than its factorization.

1806464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308 (or 1296 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1806464 is about 1344.0476182041. The cubic root of 1806464 is about 121.7894783760.

The spelling of 1806464 in words is "one million, eight hundred six thousand, four hundred sixty-four".