28682501 has 4 divisors (see below), whose sum is σ = 28694400. Its totient is φ = 28670604.

The previous prime is 28682473. The next prime is 28682531. The reversal of 28682501 is 10528682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28682501 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 (28682531) 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, 911 + ... + 7628.

It is an arithmetic number, because the mean of its divisors is an integer number (7173600).

Almost surely, 2^28682501 is an apocalyptic number.

It is an amenable number.

28682501 is a deficient number, since it is larger than the sum of its proper divisors (11899).

28682501 is an equidigital number, since it uses as much as digits as its factorization.

28682501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11898.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 28682501 is about 5355.6046343994. The cubic root of 28682501 is about 306.1063501783.

The spelling of 28682501 in words is "twenty-eight million, six hundred eighty-two thousand, five hundred one".