1078220 has 72 divisors (see below), whose sum is σ = 2766960. Its totient is φ = 349440.

The previous prime is 1078219. The next prime is 1078241. The reversal of 1078220 is 228701.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1078192 and 1078201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37166 + ... + 37194.

It is an arithmetic number, because the mean of its divisors is an integer number (38430).

2^1078220 is an apocalyptic number.

1078220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1078220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1383480).

1078220 is an abundant number, since it is smaller than the sum of its proper divisors (1688740).

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

1078220 is a wasteful number, since it uses less digits than its factorization.

1078220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 1078220 is about 1038.3737284812. The cubic root of 1078220 is about 102.5421599320.

The spelling of 1078220 in words is "one million, seventy-eight thousand, two hundred twenty".