28027929 has 8 divisors (see below), whose sum is σ = 37429920. Its totient is φ = 18655616.

The previous prime is 28027921. The next prime is 28027931. The reversal of 28027929 is 92972082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28027929 - 2³ = 28027921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28027921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5112 + ... + 9065.

It is an arithmetic number, because the mean of its divisors is an integer number (4678740).

Almost surely, 2^28027929 is an apocalyptic number.

It is an amenable number.

28027929 is a deficient number, since it is larger than the sum of its proper divisors (9401991).

28027929 is a wasteful number, since it uses less digits than its factorization.

28027929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14839.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 28027929 is about 5294.1410068112. The cubic root of 28027929 is about 303.7598266055.

It can be divided in two parts, 2802 and 7929, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 28027929 in words is "twenty-eight million, twenty-seven thousand, nine hundred twenty-nine".