228408537 has 16 divisors (see below), whose sum is σ = 348687360. Its totient is φ = 130280592.

The previous prime is 228408533. The next prime is 228408541. The reversal of 228408537 is 735804822.

It is an interprime number because it is at equal distance from previous prime (228408533) and next prime (228408541).

It is not a de Polignac number, because 228408537 - 2² = 228408533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228408495 and 228408504.

It is not an unprimeable number, because it can be changed into a prime (228408533) 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, 2164 + ... + 21482.

It is an arithmetic number, because the mean of its divisors is an integer number (21792960).

Almost surely, 2^228408537 is an apocalyptic number.

It is an amenable number.

228408537 is a deficient number, since it is larger than the sum of its proper divisors (120278823).

228408537 is a wasteful number, since it uses less digits than its factorization.

228408537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19892.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 228408537 is about 15113.1908278828. The cubic root of 228408537 is about 611.2761396644.

The spelling of 228408537 in words is "two hundred twenty-eight million, four hundred eight thousand, five hundred thirty-seven".