28950226997 has 2 divisors, whose sum is σ = 28950226998. Its totient is φ = 28950226996.

The previous prime is 28950226957. The next prime is 28950227057. The reversal of 28950226997 is 79962205982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27216420676 + 1733806321 = 164974^2 + 41639^2 .

It is a cyclic number.

It is not a de Polignac number, because 28950226997 - 2¹² = 28950222901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28950226927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14475113498 + 14475113499.

It is an arithmetic number, because the mean of its divisors is an integer number (14475113499).

Almost surely, 2^28950226997 is an apocalyptic number.

It is an amenable number.

28950226997 is a deficient number, since it is larger than the sum of its proper divisors (1).

28950226997 is an equidigital number, since it uses as much as digits as its factorization.

28950226997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9797760, while the sum is 59.

The spelling of 28950226997 in words is "twenty-eight billion, nine hundred fifty million, two hundred twenty-six thousand, nine hundred ninety-seven".