1701728028 has 504 divisors, whose sum is σ = 6154341984. Its totient is φ = 400308480.

The previous prime is 1701728023. The next prime is 1701728029. The reversal of 1701728028 is 8208271071.

It is a happy number.

It is a super-4 number, since 4×1701728028⁴ (a number of 38 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1701727983 and 1701728001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1701728023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 32108050 + ... + 32108102.

It is an arithmetic number, because the mean of its divisors is an integer number (12210996).

Almost surely, 2^1701728028 is an apocalyptic number.

1701728028 is a gapful number since it is divisible by the number (18) 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 1701728028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3077170992).

1701728028 is an abundant number, since it is smaller than the sum of its proper divisors (4452613956).

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

1701728028 is a wasteful number, since it uses less digits than its factorization.

1701728028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 1701728028 is about 41252.0063512067. The cubic root of 1701728028 is about 1193.8874417265.

Adding to 1701728028 its reverse (8208271071), we get a palindrome (9909999099).

The spelling of 1701728028 in words is "one billion, seven hundred one million, seven hundred twenty-eight thousand, twenty-eight".