2154800 has 30 divisors (see below), whose sum is σ = 5177868. Its totient is φ = 861760.

The previous prime is 2154793. The next prime is 2154811. The reversal of 2154800 is 84512.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2294 + ... + 3093.

2^2154800 is an apocalyptic number.

2154800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154800 is an abundant number, since it is smaller than the sum of its proper divisors (3023068).

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

2154800 is a wasteful number, since it uses less digits than its factorization.

2154800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5405 (or 5394 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2154800 is about 1467.9237037394. The cubic root of 2154800 is about 129.1622660080.

The spelling of 2154800 in words is "two million, one hundred fifty-four thousand, eight hundred".