28035013 has 4 divisors (see below), whose sum is σ = 29510560. Its totient is φ = 26559468.

The previous prime is 28035001. The next prime is 28035031. The reversal of 28035013 is 31053082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28035013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28035043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737745 + ... + 737782.

It is an arithmetic number, because the mean of its divisors is an integer number (7377640).

Almost surely, 2^28035013 is an apocalyptic number.

It is an amenable number.

28035013 is a deficient number, since it is larger than the sum of its proper divisors (1475547).

28035013 is a wasteful number, since it uses less digits than its factorization.

28035013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475546.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 28035013 is about 5294.8100060342. The cubic root of 28035013 is about 303.7854160018.

Adding to 28035013 its reverse (31053082), we get a palindrome (59088095).

The spelling of 28035013 in words is "twenty-eight million, thirty-five thousand, thirteen".