228528951 has 16 divisors (see below), whose sum is σ = 354806784. Its totient is φ = 128123424.

The previous prime is 228528919. The next prime is 228528953. The reversal of 228528951 is 159825822.

It is not a de Polignac number, because 228528951 - 2⁵ = 228528919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228528953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101551 + ... + 103776.

It is an arithmetic number, because the mean of its divisors is an integer number (22175424).

Almost surely, 2^228528951 is an apocalyptic number.

228528951 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

228528951 is a deficient number, since it is larger than the sum of its proper divisors (126277833).

228528951 is a wasteful number, since it uses less digits than its factorization.

228528951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205390.

The product of its digits is 115200, while the sum is 42.

The square root of 228528951 is about 15117.1740414669. The cubic root of 228528951 is about 611.3835397279.

The spelling of 228528951 in words is "two hundred twenty-eight million, five hundred twenty-eight thousand, nine hundred fifty-one".