26428837 has 2 divisors, whose sum is σ = 26428838. Its totient is φ = 26428836.

The previous prime is 26428823. The next prime is 26428879. The reversal of 26428837 is 73882462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26204161 + 224676 = 5119^2 + 474^2 .

It is a cyclic number.

It is not a de Polignac number, because 26428837 - 2²³ = 18040229 is a prime.

It is a Chen prime.

It is equal to p_1649659 and since 26428837 and 1649659 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26428837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26228837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13214418 + 13214419.

It is an arithmetic number, because the mean of its divisors is an integer number (13214419).

Almost surely, 2^26428837 is an apocalyptic number.

It is an amenable number.

26428837 is a deficient number, since it is larger than the sum of its proper divisors (1).

26428837 is an equidigital number, since it uses as much as digits as its factorization.

26428837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 40.

The square root of 26428837 is about 5140.8984623313. The cubic root of 26428837 is about 297.8694870132.

The spelling of 26428837 in words is "twenty-six million, four hundred twenty-eight thousand, eight hundred thirty-seven".