2144787 has 8 divisors (see below), whose sum is σ = 2867136. Its totient is φ = 1426152.

The previous prime is 2144783. The next prime is 2144789. The reversal of 2144787 is 7874412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2144787 - 2² = 2144783 is a prime.

It is a super-2 number, since 2×2144787² = 9200222550738, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2144783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 988 + ... + 2294.

It is an arithmetic number, because the mean of its divisors is an integer number (358392).

2^2144787 is an apocalyptic number.

2144787 is a deficient number, since it is larger than the sum of its proper divisors (722349).

2144787 is a wasteful number, since it uses less digits than its factorization.

2144787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857.

The product of its digits is 12544, while the sum is 33.

The square root of 2144787 is about 1464.5091327814. The cubic root of 2144787 is about 128.9618900705.

The spelling of 2144787 in words is "two million, one hundred forty-four thousand, seven hundred eighty-seven".