228098521 has 16 divisors (see below), whose sum is σ = 272505600. Its totient is φ = 186677568.

The previous prime is 228098513. The next prime is 228098569. The reversal of 228098521 is 125890822.

It is not a de Polignac number, because 228098521 - 2³ = 228098513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228092521) 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, 132615 + ... + 134323.

It is an arithmetic number, because the mean of its divisors is an integer number (17031600).

Almost surely, 2^228098521 is an apocalyptic number.

It is an amenable number.

228098521 is a deficient number, since it is larger than the sum of its proper divisors (44407079).

228098521 is a wasteful number, since it uses less digits than its factorization.

228098521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 228098521 is about 15102.9308745025. The cubic root of 228098521 is about 610.9994553387. Note that the first 3 decimals are identical.

The spelling of 228098521 in words is "two hundred twenty-eight million, ninety-eight thousand, five hundred twenty-one".