2881387 has 8 divisors (see below), whose sum is σ = 2979504. Its totient is φ = 2784768.

The previous prime is 2881379. The next prime is 2881391. The reversal of 2881387 is 7831882.

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

It is a cyclic number.

It is not a de Polignac number, because 2881387 - 2³ = 2881379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2881327) 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, 4563 + ... + 5155.

It is an arithmetic number, because the mean of its divisors is an integer number (372438).

2^2881387 is an apocalyptic number.

2881387 is a deficient number, since it is larger than the sum of its proper divisors (98117).

2881387 is a wasteful number, since it uses less digits than its factorization.

2881387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749.

The product of its digits is 21504, while the sum is 37.

The square root of 2881387 is about 1697.4648744525. The cubic root of 2881387 is about 142.2985683798.

It can be divided in two parts, 28813 and 87, that added together give a square (28900 = 170²).

The spelling of 2881387 in words is "two million, eight hundred eighty-one thousand, three hundred eighty-seven".