2154236 has 36 divisors (see below), whose sum is σ = 4548600. Its totient is φ = 889056.

The previous prime is 2154227. The next prime is 2154241. The reversal of 2154236 is 6324512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5495 + ... + 5873.

It is an arithmetic number, because the mean of its divisors is an integer number (126350).

2^2154236 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 2154236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2274300).

2154236 is an abundant number, since it is smaller than the sum of its proper divisors (2394364).

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

2154236 is a wasteful number, since it uses less digits than its factorization.

2154236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 417 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 2154236 is about 1467.7315830900. The cubic root of 2154236 is about 129.1509959946.

Adding to 2154236 its reverse (6324512), we get a palindrome (8478748).

The spelling of 2154236 in words is "two million, one hundred fifty-four thousand, two hundred thirty-six".