28349733 has 16 divisors (see below), whose sum is σ = 40164480. Its totient is φ = 17752896.

The previous prime is 28349723. The next prime is 28349743. The reversal of 28349733 is 33794382.

It is an interprime number because it is at equal distance from previous prime (28349723) and next prime (28349743).

It is not a de Polignac number, because 28349733 - 2¹⁰ = 28348709 is a prime.

It is a super-2 number, since 2×28349733² = 1607414722342578, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28349691 and 28349700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28349723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1185 + ... + 7622.

It is an arithmetic number, because the mean of its divisors is an integer number (2510280).

Almost surely, 2^28349733 is an apocalyptic number.

It is an amenable number.

28349733 is a deficient number, since it is larger than the sum of its proper divisors (11814747).

28349733 is a wasteful number, since it uses less digits than its factorization.

28349733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8876.

The product of its digits is 108864, while the sum is 39.

The square root of 28349733 is about 5324.4467318211. The cubic root of 28349733 is about 304.9179498004.

The spelling of 28349733 in words is "twenty-eight million, three hundred forty-nine thousand, seven hundred thirty-three".