228203287 has 8 divisors (see below), whose sum is σ = 248055696. Its totient is φ = 208679232.

The previous prime is 228203251. The next prime is 228203303. The reversal of 228203287 is 782302822.

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 228203287 - 2¹⁵ = 228170519 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228203237) 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, 80638 + ... + 83419.

It is an arithmetic number, because the mean of its divisors is an integer number (31006962).

Almost surely, 2^228203287 is an apocalyptic number.

228203287 is a deficient number, since it is larger than the sum of its proper divisors (19852409).

228203287 is a wasteful number, since it uses less digits than its factorization.

228203287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164177.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 228203287 is about 15106.3988759731. The cubic root of 228203287 is about 611.0929853491.

The spelling of 228203287 in words is "two hundred twenty-eight million, two hundred three thousand, two hundred eighty-seven".