28772752641 has 8 divisors (see below), whose sum is σ = 39601208064. Its totient is φ = 18563066160.

The previous prime is 28772752621. The next prime is 28772752643. The reversal of 28772752641 is 14625727782.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28772752641 - 2⁷ = 28772752513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28772752643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154692126 + ... + 154692311.

It is an arithmetic number, because the mean of its divisors is an integer number (4950151008).

Almost surely, 2^28772752641 is an apocalyptic number.

It is an amenable number.

28772752641 is a deficient number, since it is larger than the sum of its proper divisors (10828455423).

28772752641 is a wasteful number, since it uses less digits than its factorization.

28772752641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309384471.

The product of its digits is 2634240, while the sum is 51.

The spelling of 28772752641 in words is "twenty-eight billion, seven hundred seventy-two million, seven hundred fifty-two thousand, six hundred forty-one".