2154786 has 16 divisors (see below), whose sum is σ = 4333824. Its totient is φ = 714224.

The previous prime is 2154749. The next prime is 2154791. The reversal of 2154786 is 6874512.

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 7 ways as a sum of consecutive naturals, for example, 271 + ... + 2093.

It is an arithmetic number, because the mean of its divisors is an integer number (270864).

2^2154786 is an apocalyptic number.

2154786 is an abundant number, since it is smaller than the sum of its proper divisors (2179038).

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

2154786 is a wasteful number, since it uses less digits than its factorization.

2154786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025.

The product of its digits is 13440, while the sum is 33.

The square root of 2154786 is about 1467.9189350914. The cubic root of 2154786 is about 129.1619862797.

The spelling of 2154786 in words is "two million, one hundred fifty-four thousand, seven hundred eighty-six".