228687253 has 8 divisors (see below), whose sum is σ = 231904728. Its totient is φ = 225490944.

The previous prime is 228687223. The next prime is 228687257. The reversal of 228687253 is 352786822.

It can be written as a sum of positive squares in 4 ways, for example, as 13126129 + 215561124 = 3623^2 + 14682^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 228687253 - 2²¹ = 226590101 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 (228687257) 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, 17125 + ... + 27397.

It is an arithmetic number, because the mean of its divisors is an integer number (28988091).

Almost surely, 2^228687253 is an apocalyptic number.

It is an amenable number.

228687253 is a deficient number, since it is larger than the sum of its proper divisors (3217475).

228687253 is a wasteful number, since it uses less digits than its factorization.

228687253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10583.

The product of its digits is 322560, while the sum is 43.

The square root of 228687253 is about 15122.4089681505. The cubic root of 228687253 is about 611.5246756001.

The spelling of 228687253 in words is "two hundred twenty-eight million, six hundred eighty-seven thousand, two hundred fifty-three".