2490978 has 32 divisors (see below), whose sum is σ = 5750784. Its totient is φ = 704592.

The previous prime is 2490973. The next prime is 2490997. The reversal of 2490978 is 8790942.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2490973) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5101 + ... + 5567.

It is an arithmetic number, because the mean of its divisors is an integer number (179712).

2^2490978 is an apocalyptic number.

2490978 is an abundant number, since it is smaller than the sum of its proper divisors (3259806).

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

2490978 is a wasteful number, since it uses less digits than its factorization.

2490978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 2490978 is about 1578.2832445414. The cubic root of 2490978 is about 135.5574208688.

The spelling of 2490978 in words is "two million, four hundred ninety thousand, nine hundred seventy-eight".