28490347 has 2 divisors, whose sum is σ = 28490348. Its totient is φ = 28490346.

The previous prime is 28490327. The next prime is 28490369. The reversal of 28490347 is 74309482.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28490347 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28490327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14245173 + 14245174.

It is an arithmetic number, because the mean of its divisors is an integer number (14245174).

Almost surely, 2^28490347 is an apocalyptic number.

28490347 is a deficient number, since it is larger than the sum of its proper divisors (1).

28490347 is an equidigital number, since it uses as much as digits as its factorization.

28490347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 28490347 is about 5337.6349631649. The cubic root of 28490347 is about 305.4212471889.

The spelling of 28490347 in words is "twenty-eight million, four hundred ninety thousand, three hundred forty-seven".