4028535 has 80 divisors (see below), whose sum is σ = 8712000. Its totient is φ = 1778112.

The previous prime is 4028533. The next prime is 4028539. The reversal of 4028535 is 5358204.

It is not a de Polignac number, because 4028535 - 2¹ = 4028533 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 4028499 and 4028508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4028533) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 138901 + ... + 138929.

It is an arithmetic number, because the mean of its divisors is an integer number (108900).

Almost surely, 2^4028535 is an apocalyptic number.

4028535 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4028535 is an abundant number, since it is smaller than the sum of its proper divisors (4683465).

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

4028535 is an equidigital number, since it uses as much as digits as its factorization.

4028535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 4028535 is about 2007.1210725813. The cubic root of 4028535 is about 159.1166818852.

The spelling of 4028535 in words is "four million, twenty-eight thousand, five hundred thirty-five".