28410661 has 2 divisors, whose sum is σ = 28410662. Its totient is φ = 28410660.

The previous prime is 28410637. The next prime is 28410713. The reversal of 28410661 is 16601482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23097636 + 5313025 = 4806^2 + 2305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28410661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28410611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14205330 + 14205331.

It is an arithmetic number, because the mean of its divisors is an integer number (14205331).

Almost surely, 2^28410661 is an apocalyptic number.

It is an amenable number.

28410661 is a deficient number, since it is larger than the sum of its proper divisors (1).

28410661 is an equidigital number, since it uses as much as digits as its factorization.

28410661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 28410661 is about 5330.1651944382. The cubic root of 28410661 is about 305.1362322522.

The spelling of 28410661 in words is "twenty-eight million, four hundred ten thousand, six hundred sixty-one".