228782307 has 8 divisors (see below), whose sum is σ = 328507984. Its totient is φ = 140789088.

The previous prime is 228782303. The next prime is 228782321. The reversal of 228782307 is 703287822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 228782307 - 2² = 228782303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 5866213 = 228782307 / (2 + 2 + 8 + 7 + 8 + 2 + 3 + 0 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228782303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2933068 + ... + 2933145.

It is an arithmetic number, because the mean of its divisors is an integer number (41063498).

Almost surely, 2^228782307 is an apocalyptic number.

228782307 is a deficient number, since it is larger than the sum of its proper divisors (99725677).

228782307 is a wasteful number, since it uses less digits than its factorization.

228782307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5866229.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 228782307 is about 15125.5514610212. The cubic root of 228782307 is about 611.6093907354.

The spelling of 228782307 in words is "two hundred twenty-eight million, seven hundred eighty-two thousand, three hundred seven".