228572247 has 8 divisors (see below), whose sum is σ = 305568640. Its totient is φ = 151978680.

The previous prime is 228572243. The next prime is 228572251. The reversal of 228572247 is 742275822.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (228572243) and next prime (228572251).

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

It is not a de Polignac number, because 228572247 - 2² = 228572243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228572243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99379 + ... + 101652.

It is an arithmetic number, because the mean of its divisors is an integer number (38196080).

Almost surely, 2^228572247 is an apocalyptic number.

228572247 is a deficient number, since it is larger than the sum of its proper divisors (76996393).

228572247 is a wasteful number, since it uses less digits than its factorization.

228572247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201413.

The product of its digits is 125440, while the sum is 39.

The square root of 228572247 is about 15118.6059873257. The cubic root of 228572247 is about 611.4221472218.

The spelling of 228572247 in words is "two hundred twenty-eight million, five hundred seventy-two thousand, two hundred forty-seven".