2154888 has 36 divisors (see below), whose sum is σ = 5870085. Its totient is φ = 714144.

The previous prime is 2154881. The next prime is 2154899. The reversal of 2154888 is 8884512.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 1695204 + 459684 = 1302^2 + 678^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1038.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2154881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12370 + ... + 12542.

2^2154888 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 2154888

2154888 is an abundant number, since it is smaller than the sum of its proper divisors (3715197).

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

2154888 is a wasteful number, since it uses less digits than its factorization.

2154888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 178 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The square root of 2154888 is about 1467.9536777433. The cubic root of 2154888 is about 129.1640242725.

It can be divided in two parts, 215488 and 8, that added together give a triangular number (215496 = T₆₅₆).

The spelling of 2154888 in words is "two million, one hundred fifty-four thousand, eight hundred eighty-eight".