2154684 has 48 divisors (see below), whose sum is σ = 5822208. Its totient is φ = 607488.

The previous prime is 2154683. The next prime is 2154707. The reversal of 2154684 is 4864512.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9379 + ... + 9605.

It is an arithmetic number, because the mean of its divisors is an integer number (121296).

2^2154684 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 2154684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2911104).

2154684 is an abundant number, since it is smaller than the sum of its proper divisors (3667524).

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

2154684 is a wasteful number, since it uses less digits than its factorization.

2154684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 352 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 2154684 is about 1467.8841916173. The cubic root of 2154684 is about 129.1599482226.

The spelling of 2154684 in words is "two million, one hundred fifty-four thousand, six hundred eighty-four".