28674031 has 4 divisors (see below), whose sum is σ = 29920752. Its totient is φ = 27427312.

The previous prime is 28674017. The next prime is 28674043. The reversal of 28674031 is 13047682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13047682 = 2 ⋅6523841.

It is a cyclic number.

It is not a de Polignac number, because 28674031 - 2⁷ = 28673903 is a prime.

It is a super-2 number, since 2×28674031² = 1644400107577922, 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 = 28673984 and 28674002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28674071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623326 + ... + 623371.

It is an arithmetic number, because the mean of its divisors is an integer number (7480188).

Almost surely, 2^28674031 is an apocalyptic number.

28674031 is a deficient number, since it is larger than the sum of its proper divisors (1246721).

28674031 is a wasteful number, since it uses less digits than its factorization.

28674031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246720.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 28674031 is about 5354.8138156242. The cubic root of 28674031 is about 306.0762159391.

The spelling of 28674031 in words is "twenty-eight million, six hundred seventy-four thousand, thirty-one".