28416239437 has 2 divisors, whose sum is σ = 28416239438. Its totient is φ = 28416239436.

The previous prime is 28416239413. The next prime is 28416239441. The reversal of 28416239437 is 73493261482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28268033161 + 148206276 = 168131^2 + 12174^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28416239437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28416239447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14208119718 + 14208119719.

It is an arithmetic number, because the mean of its divisors is an integer number (14208119719).

Almost surely, 2^28416239437 is an apocalyptic number.

It is an amenable number.

28416239437 is a deficient number, since it is larger than the sum of its proper divisors (1).

28416239437 is an equidigital number, since it uses as much as digits as its factorization.

28416239437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 49.

The spelling of 28416239437 in words is "twenty-eight billion, four hundred sixteen million, two hundred thirty-nine thousand, four hundred thirty-seven".