28749927 has 16 divisors (see below), whose sum is σ = 39990272. Its totient is φ = 18351360.

The previous prime is 28749911. The next prime is 28749961. The reversal of 28749927 is 72994782.

It is not a de Polignac number, because 28749927 - 2⁴ = 28749911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28749967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7428 + ... + 10614.

It is an arithmetic number, because the mean of its divisors is an integer number (2499392).

Almost surely, 2^28749927 is an apocalyptic number.

28749927 is a deficient number, since it is larger than the sum of its proper divisors (11240345).

28749927 is a wasteful number, since it uses less digits than its factorization.

28749927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318.

The product of its digits is 508032, while the sum is 48.

The square root of 28749927 is about 5361.8958400924. The cubic root of 28749927 is about 306.3460244768.

The spelling of 28749927 in words is "twenty-eight million, seven hundred forty-nine thousand, nine hundred twenty-seven".