2798631 has 28 divisors (see below), whose sum is σ = 4590600. Its totient is φ = 1691280.

The previous prime is 2798623. The next prime is 2798639. The reversal of 2798631 is 1368972.

2798631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2798623) and next prime (2798639).

It is not a de Polignac number, because 2798631 - 2³ = 2798623 is a prime.

It is a super-2 number, since 2×2798631² = 15664670948322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

Its product of digits (18144) is a multiple of the sum of its prime factors (378).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2798639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 7845 + ... + 8193.

It is an arithmetic number, because the mean of its divisors is an integer number (163950).

2^2798631 is an apocalyptic number.

2798631 is a deficient number, since it is larger than the sum of its proper divisors (1791969).

2798631 is an equidigital number, since it uses as much as digits as its factorization.

2798631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 363 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 2798631 is about 1672.9109360632. The cubic root of 2798631 is about 140.9230000586.

The spelling of 2798631 in words is "two million, seven hundred ninety-eight thousand, six hundred thirty-one".