28764927 has 24 divisors (see below), whose sum is σ = 43929600. Its totient is φ = 18100368.

The previous prime is 28764899. The next prime is 28764937. The reversal of 28764927 is 72946782.

It is not a de Polignac number, because 28764927 - 2⁶ = 28764863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28764937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15474 + ... + 17232.

It is an arithmetic number, because the mean of its divisors is an integer number (1830400).

Almost surely, 2^28764927 is an apocalyptic number.

28764927 is a deficient number, since it is larger than the sum of its proper divisors (15164673).

28764927 is a wasteful number, since it uses less digits than its factorization.

28764927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867 (or 1864 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 28764927 is about 5363.2944166809. The cubic root of 28764927 is about 306.3992929185.

The spelling of 28764927 in words is "twenty-eight million, seven hundred sixty-four thousand, nine hundred twenty-seven".