2154004 has 24 divisors (see below), whose sum is σ = 4032000. Its totient is φ = 1004640.

The previous prime is 2153993. The next prime is 2154007. The reversal of 2154004 is 4004512.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154007) 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, 3297 + ... + 3895.

It is an arithmetic number, because the mean of its divisors is an integer number (168000).

2^2154004 is an apocalyptic number.

It is an amenable number.

2154004 is a deficient number, since it is larger than the sum of its proper divisors (1877996).

2154004 is a wasteful number, since it uses less digits than its factorization.

2154004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2154004 is about 1467.6525474376. The cubic root of 2154004 is about 129.1463595316.

Adding to 2154004 its reverse (4004512), we get a palindrome (6158516).

The spelling of 2154004 in words is "two million, one hundred fifty-four thousand, four".