28761927 has 16 divisors (see below), whose sum is σ = 39530208. Its totient is φ = 18593280.

The previous prime is 28761919. The next prime is 28761947. The reversal of 28761927 is 72916782.

It is not a de Polignac number, because 28761927 - 2³ = 28761919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28761947) 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 15 ways as a sum of consecutive naturals, for example, 12283 + ... + 14435.

It is an arithmetic number, because the mean of its divisors is an integer number (2470638).

Almost surely, 2^28761927 is an apocalyptic number.

28761927 is a deficient number, since it is larger than the sum of its proper divisors (10768281).

28761927 is a wasteful number, since it uses less digits than its factorization.

28761927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290.

The product of its digits is 84672, while the sum is 42.

The square root of 28761927 is about 5363.0147305410. The cubic root of 28761927 is about 306.3886407119.

The spelling of 28761927 in words is "twenty-eight million, seven hundred sixty-one thousand, nine hundred twenty-seven".