1022978 has 8 divisors (see below), whose sum is σ = 1674000. Its totient is φ = 464980.

The previous prime is 1022977. The next prime is 1022981. The reversal of 1022978 is 8792201.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1022978.

It is not an unprimeable number, because it can be changed into a prime (1022977) 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, 23228 + ... + 23271.

It is an arithmetic number, because the mean of its divisors is an integer number (209250).

2^1022978 is an apocalyptic number.

1022978 is a deficient number, since it is larger than the sum of its proper divisors (651022).

1022978 is a wasteful number, since it uses less digits than its factorization.

1022978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46512.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1022978 is about 1011.4237489796. The cubic root of 1022978 is about 100.7601405560.

The spelling of 1022978 in words is "one million, twenty-two thousand, nine hundred seventy-eight".