28360887437 has 4 divisors (see below), whose sum is σ = 28702584960. Its totient is φ = 28019189916.

The previous prime is 28360887397. The next prime is 28360887463. The reversal of 28360887437 is 73478806382.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28360887437 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 (28360884437) 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 3 ways as a sum of consecutive naturals, for example, 170848637 + ... + 170848802.

It is an arithmetic number, because the mean of its divisors is an integer number (7175646240).

Almost surely, 2^28360887437 is an apocalyptic number.

It is an amenable number.

28360887437 is a deficient number, since it is larger than the sum of its proper divisors (341697523).

28360887437 is an equidigital number, since it uses as much as digits as its factorization.

28360887437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341697522.

The product of its (nonzero) digits is 10838016, while the sum is 56.

The spelling of 28360887437 in words is "twenty-eight billion, three hundred sixty million, eight hundred eighty-seven thousand, four hundred thirty-seven".