28331678741 has 8 divisors (see below), whose sum is σ = 28995200640. Its totient is φ = 27675827872.

The previous prime is 28331678723. The next prime is 28331678803. The reversal of 28331678741 is 14787613382.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28331678741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28331678741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28331678941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1910285 + ... + 1925058.

It is an arithmetic number, because the mean of its divisors is an integer number (3624400080).

Almost surely, 2^28331678741 is an apocalyptic number.

It is an amenable number.

28331678741 is a deficient number, since it is larger than the sum of its proper divisors (663521899).

28331678741 is an equidigital number, since it uses as much as digits as its factorization.

28331678741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3835515.

The product of its digits is 1354752, while the sum is 50.

The spelling of 28331678741 in words is "twenty-eight billion, three hundred thirty-one million, six hundred seventy-eight thousand, seven hundred forty-one".