2066428 has 36 divisors (see below), whose sum is σ = 4535832. Its totient is φ = 816480.

The previous prime is 2066419. The next prime is 2066437. The reversal of 2066428 is 8246602.

It is an interprime number because it is at equal distance from previous prime (2066419) and next prime (2066437).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 2066396 and 2066405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2143 + ... + 2953.

2^2066428 is an apocalyptic number.

2066428 is a gapful number since it is divisible by the number (28) 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 2066428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2267916).

2066428 is an abundant number, since it is smaller than the sum of its proper divisors (2469404).

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

2066428 is a wasteful number, since it uses less digits than its factorization.

2066428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2066428 is about 1437.5075651975. The cubic root of 2066428 is about 127.3718409769.

The spelling of 2066428 in words is "two million, sixty-six thousand, four hundred twenty-eight".