228409738 has 8 divisors (see below), whose sum is σ = 342792000. Its totient is φ = 114145740.

The previous prime is 228409703. The next prime is 228409747. The reversal of 228409738 is 837904822.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 228409694 and 228409703.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 24568 + ... + 32563.

It is an arithmetic number, because the mean of its divisors is an integer number (42849000).

Almost surely, 2^228409738 is an apocalyptic number.

228409738 is a deficient number, since it is larger than the sum of its proper divisors (114382262).

228409738 is a wasteful number, since it uses less digits than its factorization.

228409738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59132.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 228409738 is about 15113.2305613327. The cubic root of 228409738 is about 611.2772110508.

The spelling of 228409738 in words is "two hundred twenty-eight million, four hundred nine thousand, seven hundred thirty-eight".