28972041041 has 4 divisors (see below), whose sum is σ = 29404459632. Its totient is φ = 28539622452.

The previous prime is 28972041023. The next prime is 28972041047. The reversal of 28972041041 is 14014027982.

It is a happy number.

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 28972041041 - 2²² = 28967846737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28972040986 and 28972041004.

It is not an unprimeable number, because it can be changed into a prime (28972041047) 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, 216209195 + ... + 216209328.

It is an arithmetic number, because the mean of its divisors is an integer number (7351114908).

Almost surely, 2^28972041041 is an apocalyptic number.

It is an amenable number.

28972041041 is a deficient number, since it is larger than the sum of its proper divisors (432418591).

28972041041 is an equidigital number, since it uses as much as digits as its factorization.

28972041041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432418590.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 28972041041 in words is "twenty-eight billion, nine hundred seventy-two million, forty-one thousand, forty-one".