28232047 has 2 divisors, whose sum is σ = 28232048. Its totient is φ = 28232046.

The previous prime is 28232021. The next prime is 28232077. The reversal of 28232047 is 74023282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28232047 - 2⁷ = 28231919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28232077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14116023 + 14116024.

It is an arithmetic number, because the mean of its divisors is an integer number (14116024).

Almost surely, 2^28232047 is an apocalyptic number.

28232047 is a deficient number, since it is larger than the sum of its proper divisors (1).

28232047 is an equidigital number, since it uses as much as digits as its factorization.

28232047 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 28.

The square root of 28232047 is about 5313.3837617850. The cubic root of 28232047 is about 304.4954373720.

The spelling of 28232047 in words is "twenty-eight million, two hundred thirty-two thousand, forty-seven".