2381872 has 10 divisors (see below), whose sum is σ = 4614908. Its totient is φ = 1190928.

The previous prime is 2381861. The next prime is 2381879. The reversal of 2381872 is 2781832.

It is an alternating number because its digits alternate between even and odd.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (2381879) 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 as a sum of consecutive naturals, namely, 74418 + ... + 74449.

2^2381872 is an apocalyptic number.

It is an amenable number.

2381872 is a deficient number, since it is larger than the sum of its proper divisors (2233036).

2381872 is a wasteful number, since it uses less digits than its factorization.

2381872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148875 (or 148869 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 2381872 is about 1543.3314614819. The cubic root of 2381872 is about 133.5486410212.

The spelling of 2381872 in words is "two million, three hundred eighty-one thousand, eight hundred seventy-two".