28356347 has 2 divisors, whose sum is σ = 28356348. Its totient is φ = 28356346.

The previous prime is 28356337. The next prime is 28356359. The reversal of 28356347 is 74365382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28356347 - 2⁶ = 28356283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28356347.

It is not a weakly prime, because it can be changed into another prime (28356337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14178173 + 14178174.

It is an arithmetic number, because the mean of its divisors is an integer number (14178174).

Almost surely, 2^28356347 is an apocalyptic number.

28356347 is a deficient number, since it is larger than the sum of its proper divisors (1).

28356347 is an equidigital number, since it uses as much as digits as its factorization.

28356347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 38.

The square root of 28356347 is about 5325.0677929957. The cubic root of 28356347 is about 304.9416604353.

The spelling of 28356347 in words is "twenty-eight million, three hundred fifty-six thousand, three hundred forty-seven".