28074029 has 4 divisors (see below), whose sum is σ = 28549920. Its totient is φ = 27598140.

The previous prime is 28074017. The next prime is 28074037. The reversal of 28074029 is 92047082.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92047082 = 2 ⋅46023541.

It is a cyclic number.

It is not a de Polignac number, because 28074029 - 2¹⁶ = 28008493 is a prime.

It is a super-2 number, since 2×28074029² = 1576302208585682, 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 = 28073986 and 28074004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28074049) 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 3 ways as a sum of consecutive naturals, for example, 237857 + ... + 237974.

It is an arithmetic number, because the mean of its divisors is an integer number (7137480).

Almost surely, 2^28074029 is an apocalyptic number.

It is an amenable number.

28074029 is a deficient number, since it is larger than the sum of its proper divisors (475891).

28074029 is an equidigital number, since it uses as much as digits as its factorization.

28074029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475890.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 28074029 is about 5298.4930876618. The cubic root of 28074029 is about 303.9262755490.

The spelling of 28074029 in words is "twenty-eight million, seventy-four thousand, twenty-nine".