2491928 has 32 divisors (see below), whose sum is σ = 5034960. Its totient is φ = 1152000.

The previous prime is 2491903. The next prime is 2491933. The reversal of 2491928 is 8291942.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9803 + ... + 10053.

2^2491928 is an apocalyptic number.

It is an amenable number.

2491928 is an abundant number, since it is smaller than the sum of its proper divisors (2543032).

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

2491928 is a wasteful number, since it uses less digits than its factorization.

2491928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 343 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 2491928 is about 1578.5841757727. The cubic root of 2491928 is about 135.5746514749.

The spelling of 2491928 in words is "two million, four hundred ninety-one thousand, nine hundred twenty-eight".