228102549 has 16 divisors (see below), whose sum is σ = 323449920. Its totient is φ = 142490880.

The previous prime is 228102547. The next prime is 228102559. The reversal of 228102549 is 945201822.

It is not a de Polignac number, because 228102549 - 2¹ = 228102547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228102547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1914 + ... + 21444.

It is an arithmetic number, because the mean of its divisors is an integer number (20215620).

Almost surely, 2^228102549 is an apocalyptic number.

It is an amenable number.

228102549 is a deficient number, since it is larger than the sum of its proper divisors (95347371).

228102549 is a wasteful number, since it uses less digits than its factorization.

228102549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19780.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 228102549 is about 15103.0642255140. The cubic root of 228102549 is about 611.0030518713.

The spelling of 228102549 in words is "two hundred twenty-eight million, one hundred two thousand, five hundred forty-nine".