228148503 has 16 divisors (see below), whose sum is σ = 334958976. Its totient is φ = 136977440.

The previous prime is 228148471. The next prime is 228148507. The reversal of 228148503 is 305841822.

228148503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 228148503 - 2⁵ = 228148471 is a prime.

It is a super-2 number, since 2×228148503² = 104103478842282018, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228148507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28776 + ... + 35837.

It is an arithmetic number, because the mean of its divisors is an integer number (20934936).

Almost surely, 2^228148503 is an apocalyptic number.

228148503 is a deficient number, since it is larger than the sum of its proper divisors (106810473).

228148503 is a wasteful number, since it uses less digits than its factorization.

228148503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64734.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 228148503 is about 15104.5854958023. The cubic root of 228148503 is about 611.0440804189.

The spelling of 228148503 in words is "two hundred twenty-eight million, one hundred forty-eight thousand, five hundred three".