1020978 has 64 divisors (see below), whose sum is σ = 2699520. Its totient is φ = 279936.

The previous prime is 1020977. The next prime is 1020979. The reversal of 1020978 is 8790201.

1020978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1020977) and next prime (1020979).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1020973) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13950 + ... + 14022.

It is an arithmetic number, because the mean of its divisors is an integer number (42180).

2^1020978 is an apocalyptic number.

1020978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1349760).

1020978 is an abundant number, since it is smaller than the sum of its proper divisors (1678542).

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

1020978 is a wasteful number, since it uses less digits than its factorization.

1020978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1020978 is about 1010.4345599790. The cubic root of 1020978 is about 100.6944331302.

The spelling of 1020978 in words is "one million, twenty thousand, nine hundred seventy-eight".