2491628 has 12 divisors (see below), whose sum is σ = 4373880. Its totient is φ = 1241952.

The previous prime is 2491609. The next prime is 2491649. The reversal of 2491628 is 8261942.

It is a junction number, because it is equal to n+sod(n) for n = 2491594 and 2491603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 875 + ... + 2397.

It is an arithmetic number, because the mean of its divisors is an integer number (364490).

2^2491628 is an apocalyptic number.

It is an amenable number.

2491628 is a deficient number, since it is larger than the sum of its proper divisors (1882252).

2491628 is a wasteful number, since it uses less digits than its factorization.

2491628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936 (or 1934 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 2491628 is about 1578.4891510555. The cubic root of 2491628 is about 135.5692107040.

The spelling of 2491628 in words is "two million, four hundred ninety-one thousand, six hundred twenty-eight".