28736245 has 16 divisors (see below), whose sum is σ = 36288000. Its totient is φ = 21813568.

The previous prime is 28736243. The next prime is 28736249. The reversal of 28736245 is 54263782.

It is not a de Polignac number, because 28736245 - 2¹ = 28736243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28736243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6876 + ... + 10234.

It is an arithmetic number, because the mean of its divisors is an integer number (2268000).

Almost surely, 2^28736245 is an apocalyptic number.

It is an amenable number.

28736245 is a deficient number, since it is larger than the sum of its proper divisors (7551755).

28736245 is a wasteful number, since it uses less digits than its factorization.

28736245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452.

The product of its digits is 80640, while the sum is 37.

The square root of 28736245 is about 5360.6198335640. The cubic root of 28736245 is about 306.2974203954.

The spelling of 28736245 in words is "twenty-eight million, seven hundred thirty-six thousand, two hundred forty-five".