2017428 has 72 divisors (see below), whose sum is σ = 5668992. Its totient is φ = 556416.

The previous prime is 2017427. The next prime is 2017447. The reversal of 2017428 is 8247102.

It is a junction number, because it is equal to n+sod(n) for n = 2017398 and 2017407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2017427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27600 + ... + 27672.

It is an arithmetic number, because the mean of its divisors is an integer number (78736).

2^2017428 is an apocalyptic number.

2017428 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 2017428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2834496).

2017428 is an abundant number, since it is smaller than the sum of its proper divisors (3651564).

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

2017428 is a wasteful number, since it uses less digits than its factorization.

2017428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 2017428 is about 1420.3619257077. The cubic root of 2017428 is about 126.3570121670.

It can be divided in two parts, 20174 and 28, that added together give a palindrome (20202).

The spelling of 2017428 in words is "two million, seventeen thousand, four hundred twenty-eight".