228197438 has 8 divisors (see below), whose sum is σ = 391195632. Its totient is φ = 97798896.

The previous prime is 228197419. The next prime is 228197449. The reversal of 228197438 is 834791822.

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

It is a congruent number.

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, 8149895 + ... + 8149922.

It is an arithmetic number, because the mean of its divisors is an integer number (48899454).

Almost surely, 2^228197438 is an apocalyptic number.

228197438 is a deficient number, since it is larger than the sum of its proper divisors (162998194).

228197438 is a wasteful number, since it uses less digits than its factorization.

228197438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16299826.

The product of its digits is 193536, while the sum is 44.

The square root of 228197438 is about 15106.2052812743. The cubic root of 228197438 is about 611.0877643998.

The spelling of 228197438 in words is "two hundred twenty-eight million, one hundred ninety-seven thousand, four hundred thirty-eight".