28067801 has 2 divisors, whose sum is σ = 28067802. Its totient is φ = 28067800.

The previous prime is 28067783. The next prime is 28067839. The reversal of 28067801 is 10876082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24245776 + 3822025 = 4924^2 + 1955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28067801 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28067891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14033900 + 14033901.

It is an arithmetic number, because the mean of its divisors is an integer number (14033901).

Almost surely, 2^28067801 is an apocalyptic number.

It is an amenable number.

28067801 is a deficient number, since it is larger than the sum of its proper divisors (1).

28067801 is an equidigital number, since it uses as much as digits as its factorization.

28067801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 28067801 is about 5297.9053407927. The cubic root of 28067801 is about 303.9037993447.

The spelling of 28067801 in words is "twenty-eight million, sixty-seven thousand, eight hundred one".