28026377 has 2 divisors, whose sum is σ = 28026378. Its totient is φ = 28026376.

The previous prime is 28026371. The next prime is 28026437. The reversal of 28026377 is 77362082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15713296 + 12313081 = 3964^2 + 3509^2 .

It is a cyclic number.

It is not a de Polignac number, because 28026377 - 2¹⁰ = 28025353 is a prime.

It is a super-2 number, since 2×28026377² = 1570955615492258, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28026371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14013188 + 14013189.

It is an arithmetic number, because the mean of its divisors is an integer number (14013189).

Almost surely, 2^28026377 is an apocalyptic number.

It is an amenable number.

28026377 is a deficient number, since it is larger than the sum of its proper divisors (1).

28026377 is an equidigital number, since it uses as much as digits as its factorization.

28026377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 28026377 is about 5293.9944276510. The cubic root of 28026377 is about 303.7542197701.

The spelling of 28026377 in words is "twenty-eight million, twenty-six thousand, three hundred seventy-seven".