2098778 has 16 divisors (see below), whose sum is σ = 3615840. Its totient is φ = 903600.

The previous prime is 2098777. The next prime is 2098781. The reversal of 2098778 is 8778902.

It is not an unprimeable number, because it can be changed into a prime (2098777) 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 7 ways as a sum of consecutive naturals, for example, 2093 + ... + 2928.

It is an arithmetic number, because the mean of its divisors is an integer number (225990).

2^2098778 is an apocalyptic number.

2098778 is a deficient number, since it is larger than the sum of its proper divisors (1517062).

2098778 is a wasteful number, since it uses less digits than its factorization.

2098778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5053.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 2098778 is about 1448.7159832072. The cubic root of 2098778 is about 128.0330725087.

The spelling of 2098778 in words is "two million, ninety-eight thousand, seven hundred seventy-eight".