28656060737 has 4 divisors (see below), whose sum is σ = 30164274480. Its totient is φ = 27147846996.

The previous prime is 28656060691. The next prime is 28656060809. The reversal of 28656060737 is 73706065682.

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 not a de Polignac number, because 28656060737 - 2⁸ = 28656060481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28656090737) 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, 754106843 + ... + 754106880.

It is an arithmetic number, because the mean of its divisors is an integer number (7541068620).

Almost surely, 2^28656060737 is an apocalyptic number.

It is an amenable number.

28656060737 is a deficient number, since it is larger than the sum of its proper divisors (1508213743).

28656060737 is a wasteful number, since it uses less digits than its factorization.

28656060737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508213742.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 28656060737 in words is "twenty-eight billion, six hundred fifty-six million, sixty thousand, seven hundred thirty-seven".