2788961 has 4 divisors (see below), whose sum is σ = 3187392. Its totient is φ = 2390532.

The previous prime is 2788939. The next prime is 2788979. The reversal of 2788961 is 1698872.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2788961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2788661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199205 + ... + 199218.

It is an arithmetic number, because the mean of its divisors is an integer number (796848).

2^2788961 is an apocalyptic number.

It is an amenable number.

2788961 is a deficient number, since it is larger than the sum of its proper divisors (398431).

2788961 is an equidigital number, since it uses as much as digits as its factorization.

2788961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398430.

The product of its digits is 48384, while the sum is 41.

The square root of 2788961 is about 1670.0182633732. The cubic root of 2788961 is about 140.7605041866.

It can be divided in two parts, 27 and 88961, that added together give a palindrome (88988).

The spelling of 2788961 in words is "two million, seven hundred eighty-eight thousand, nine hundred sixty-one".