28727841 has 16 divisors (see below), whose sum is σ = 40811904. Its totient is φ = 17912064.

The previous prime is 28727837. The next prime is 28727843. The reversal of 28727841 is 14872782.

It is not a de Polignac number, because 28727841 - 2² = 28727837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28727841.

It is not an unprimeable number, because it can be changed into a prime (28727843) 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, 6831 + ... + 10203.

It is an arithmetic number, because the mean of its divisors is an integer number (2550744).

Almost surely, 2^28727841 is an apocalyptic number.

It is an amenable number.

28727841 is a deficient number, since it is larger than the sum of its proper divisors (12084063).

28727841 is a wasteful number, since it uses less digits than its factorization.

28727841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560.

The product of its digits is 50176, while the sum is 39.

The square root of 28727841 is about 5359.8359116674. The cubic root of 28727841 is about 306.2675582880.

The spelling of 28727841 in words is "twenty-eight million, seven hundred twenty-seven thousand, eight hundred forty-one".