28988527 has 4 divisors (see below), whose sum is σ = 29180656. Its totient is φ = 28796400.

The previous prime is 28988521. The next prime is 28988551. The reversal of 28988527 is 72588982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72588982 = 2 ⋅36294491.

It is a cyclic number.

It is not a de Polignac number, because 28988527 - 2²³ = 20599919 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 (28988521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95838 + ... + 96139.

It is an arithmetic number, because the mean of its divisors is an integer number (7295164).

Almost surely, 2^28988527 is an apocalyptic number.

28988527 is a deficient number, since it is larger than the sum of its proper divisors (192129).

28988527 is a wasteful number, since it uses less digits than its factorization.

28988527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192128.

The product of its digits is 645120, while the sum is 49.

The square root of 28988527 is about 5384.0994604483. The cubic root of 28988527 is about 307.1911614877.

The spelling of 28988527 in words is "twenty-eight million, nine hundred eighty-eight thousand, five hundred twenty-seven".