2788831 has 2 divisors, whose sum is σ = 2788832. Its totient is φ = 2788830.

The previous prime is 2788829. The next prime is 2788889. The reversal of 2788831 is 1388872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2788831 - 2¹ = 2788829 is a prime.

It is a super-2 number, since 2×2788831² = 15555156693122, which contains 22 as substring.

Together with 2788829, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2788531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1394415 + 1394416.

It is an arithmetic number, because the mean of its divisors is an integer number (1394416).

2^2788831 is an apocalyptic number.

2788831 is a deficient number, since it is larger than the sum of its proper divisors (1).

2788831 is an equidigital number, since it uses as much as digits as its factorization.

2788831 is an evil number, because the sum of its binary digits is even.

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

The square root of 2788831 is about 1669.9793411896. The cubic root of 2788831 is about 140.7583170937.

The spelling of 2788831 in words is "two million, seven hundred eighty-eight thousand, eight hundred thirty-one".