28838372293 has 2 divisors, whose sum is σ = 28838372294. Its totient is φ = 28838372292.

The previous prime is 28838372203. The next prime is 28838372309. The reversal of 28838372293 is 39227383882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14739659649 + 14098712644 = 121407^2 + 118738^2 .

It is a cyclic number.

It is not a de Polignac number, because 28838372293 - 2¹³ = 28838364101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28838372203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14419186146 + 14419186147.

It is an arithmetic number, because the mean of its divisors is an integer number (14419186147).

Almost surely, 2^28838372293 is an apocalyptic number.

It is an amenable number.

28838372293 is a deficient number, since it is larger than the sum of its proper divisors (1).

28838372293 is an equidigital number, since it uses as much as digits as its factorization.

28838372293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6967296, while the sum is 55.

The spelling of 28838372293 in words is "twenty-eight billion, eight hundred thirty-eight million, three hundred seventy-two thousand, two hundred ninety-three".