2497778 has 8 divisors (see below), whose sum is σ = 3943920. Its totient is φ = 1183140.

The previous prime is 2497771. The next prime is 2497801. The reversal of 2497778 is 8777942.

2497778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2497771) 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 3 ways as a sum of consecutive naturals, for example, 32828 + ... + 32903.

It is an arithmetic number, because the mean of its divisors is an integer number (492990).

2^2497778 is an apocalyptic number.

2497778 is a deficient number, since it is larger than the sum of its proper divisors (1446142).

2497778 is a wasteful number, since it uses less digits than its factorization.

2497778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65752.

The product of its digits is 197568, while the sum is 44.

The square root of 2497778 is about 1580.4360157880. The cubic root of 2497778 is about 135.6806593381.

The spelling of 2497778 in words is "two million, four hundred ninety-seven thousand, seven hundred seventy-eight".