2154040 has 64 divisors (see below), whose sum is σ = 5688000. Its totient is φ = 733824.

The previous prime is 2154037. The next prime is 2154041. The reversal of 2154040 is 404512.

2154040 is nontrivially palindromic in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154041) 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, 13642 + ... + 13798.

It is an arithmetic number, because the mean of its divisors is an integer number (88875).

2^2154040 is an apocalyptic number.

2154040 is a gapful number since it is divisible by the number (20) 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 2154040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2844000).

2154040 is an abundant number, since it is smaller than the sum of its proper divisors (3533960).

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

2154040 is a wasteful number, since it uses less digits than its factorization.

2154040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 171 counting only the distinct ones).

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

The square root of 2154040 is about 1467.6648118695. The cubic root of 2154040 is about 129.1470790045.

Adding to 2154040 its reverse (404512), we get a palindrome (2558552).

The spelling of 2154040 in words is "two million, one hundred fifty-four thousand, forty".