2631916 has 12 divisors (see below), whose sum is σ = 5263888. Its totient is φ = 1127952.

The previous prime is 2631887. The next prime is 2631917. The reversal of 2631916 is 6191362.

2631916 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 93997 = 2631916 / (2 + 6 + 3 + 1 + 9 + 1 + 6).

It is a d-powerful number, because it can be written as 2²¹ + 6⁴ + 3¹² + 1 + 9³ + 1 + 6⁴ .

It is not an unprimeable number, because it can be changed into a prime (2631917) 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, 46971 + ... + 47026.

2^2631916 is an apocalyptic number.

It is an amenable number.

2631916 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2631916 is a wasteful number, since it uses less digits than its factorization.

2631916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94008 (or 94006 counting only the distinct ones).

The product of its digits is 1944, while the sum is 28.

The square root of 2631916 is about 1622.3180945795. The cubic root of 2631916 is about 138.0672500062.

It can be divided in two parts, 26319 and 16, that added together give a triangular number (26335 = T₂₂₉).

The spelling of 2631916 in words is "two million, six hundred thirty-one thousand, nine hundred sixteen".