28848731 has 4 divisors (see below), whose sum is σ = 29134464. Its totient is φ = 28563000.

The previous prime is 28848713. The next prime is 28848751. The reversal of 28848731 is 13784882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28848731 - 2¹⁴ = 28832347 is a prime.

It is a super-2 number, since 2×28848731² = 1664498560620722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28848751) 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 3 ways as a sum of consecutive naturals, for example, 142715 + ... + 142916.

It is an arithmetic number, because the mean of its divisors is an integer number (7283616).

Almost surely, 2^28848731 is an apocalyptic number.

28848731 is a deficient number, since it is larger than the sum of its proper divisors (285733).

28848731 is a wasteful number, since it uses less digits than its factorization.

28848731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285732.

The product of its digits is 86016, while the sum is 41.

The square root of 28848731 is about 5371.1014699035. The cubic root of 28848731 is about 306.6965599142.

The spelling of 28848731 in words is "twenty-eight million, eight hundred forty-eight thousand, seven hundred thirty-one".