992778 has 8 divisors (see below), whose sum is σ = 1985568. Its totient is φ = 330924.

The previous prime is 992777. The next prime is 992801. The reversal of 992778 is 877299.

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

992778 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (992777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82726 + ... + 82737.

It is an arithmetic number, because the mean of its divisors is an integer number (248196).

2⁹⁹²⁷⁷⁸ is an apocalyptic number.

992778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

992778 is a wasteful number, since it uses less digits than its factorization.

992778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165468.

The product of its digits is 63504, while the sum is 42.

The square root of 992778 is about 996.3824566902. The cubic root of 992778 is about 99.7586848048.

It can be divided in two parts, 992 and 778, that added together give a triangular number (1770 = T₅₉).

The spelling of 992778 in words is "nine hundred ninety-two thousand, seven hundred seventy-eight".