28610033 has 4 divisors (see below), whose sum is σ = 28716660. Its totient is φ = 28503408.

The previous prime is 28610027. The next prime is 28610039. The reversal of 28610033 is 33001682.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28610027) and next prime (28610039).

It can be written as a sum of positive squares in 2 ways, for example, as 17205904 + 11404129 = 4148^2 + 3377^2 .

It is a cyclic number.

It is not a de Polignac number, because 28610033 - 2¹² = 28605937 is a prime.

It is a super-2 number, since 2×28610033² = 1637067976522178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28609990 and 28610008.

It is not an unprimeable number, because it can be changed into a prime (28610039) 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, 52910 + ... + 53447.

It is an arithmetic number, because the mean of its divisors is an integer number (7179165).

Almost surely, 2^28610033 is an apocalyptic number.

It is an amenable number.

28610033 is a deficient number, since it is larger than the sum of its proper divisors (106627).

28610033 is a wasteful number, since it uses less digits than its factorization.

28610033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106626.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 28610033 is about 5348.8347329115. The cubic root of 28610033 is about 305.8483342845.

The spelling of 28610033 in words is "twenty-eight million, six hundred ten thousand, thirty-three".