28232847 has 32 divisors (see below), whose sum is σ = 43776000. Its totient is φ = 17962560.

The previous prime is 28232821. The next prime is 28232873. The reversal of 28232847 is 74823282.

It is an interprime number because it is at equal distance from previous prime (28232821) and next prime (28232873).

It is not a de Polignac number, because 28232847 - 2⁷ = 28232719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28232047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74304 + ... + 74682.

It is an arithmetic number, because the mean of its divisors is an integer number (1368000).

Almost surely, 2^28232847 is an apocalyptic number.

28232847 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

28232847 is a deficient number, since it is larger than the sum of its proper divisors (15543153).

28232847 is a wasteful number, since it uses less digits than its factorization.

28232847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 502 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 28232847 is about 5313.4590428458. The cubic root of 28232847 is about 304.4983134659.

The spelling of 28232847 in words is "twenty-eight million, two hundred thirty-two thousand, eight hundred forty-seven".