2154090 has 32 divisors (see below), whose sum is σ = 5261760. Its totient is φ = 564224.

The previous prime is 2154077. The next prime is 2154109. The reversal of 2154090 is 904512.

2154090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1162 + ... + 2378.

It is an arithmetic number, because the mean of its divisors is an integer number (164430).

2^2154090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2154090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2630880).

2154090 is an abundant number, since it is smaller than the sum of its proper divisors (3107670).

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

2154090 is a wasteful number, since it uses less digits than its factorization.

2154090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2154090 is about 1467.6818456328. The cubic root of 2154090 is about 129.1480782593.

The spelling of 2154090 in words is "two million, one hundred fifty-four thousand, ninety".