2154180 has 96 divisors (see below), whose sum is σ = 7225344. Its totient is φ = 468864.

The previous prime is 2154169. The next prime is 2154193. The reversal of 2154180 is 814512.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9549 + ... + 9771.

It is an arithmetic number, because the mean of its divisors is an integer number (75264).

2^2154180 is an apocalyptic number.

2154180 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 2154180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3612672).

2154180 is an abundant number, since it is smaller than the sum of its proper divisors (5071164).

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

2154180 is a wasteful number, since it uses less digits than its factorization.

2154180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 2154180 is about 1467.7125059084. The cubic root of 2154180 is about 129.1498768788.

Adding to 2154180 its reverse (814512), we get a palindrome (2968692).

The spelling of 2154180 in words is "two million, one hundred fifty-four thousand, one hundred eighty".