1622868 has 48 divisors (see below), whose sum is σ = 4158336. Its totient is φ = 489600.

The previous prime is 1622867. The next prime is 1622879. The reversal of 1622868 is 8682261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15705 + ... + 15807.

It is an arithmetic number, because the mean of its divisors is an integer number (86632).

2^1622868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1622868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2079168).

1622868 is an abundant number, since it is smaller than the sum of its proper divisors (2535468).

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

1622868 is a wasteful number, since it uses less digits than its factorization.

1622868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 222 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 1622868 is about 1273.9183647314. The cubic root of 1622868 is about 117.5152960319.

The spelling of 1622868 in words is "one million, six hundred twenty-two thousand, eight hundred sixty-eight".