228546638 has 8 divisors (see below), whose sum is σ = 346214520. Its totient is φ = 113141800.

The previous prime is 228546631. The next prime is 228546683. The reversal of 228546638 is 836645822.

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

It is a super-2 number, since 2×228546638² = 104467131482206088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228546631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565508 + ... + 565911.

It is an arithmetic number, because the mean of its divisors is an integer number (43276815).

Almost surely, 2^228546638 is an apocalyptic number.

228546638 is a deficient number, since it is larger than the sum of its proper divisors (117667882).

228546638 is a wasteful number, since it uses less digits than its factorization.

228546638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131522.

The product of its digits is 552960, while the sum is 44.

The square root of 228546638 is about 15117.7590270516. The cubic root of 228546638 is about 611.3993119990.

It can be divided in two parts, 22854 and 6638, that added together give a palindrome (29492).

The spelling of 228546638 in words is "two hundred twenty-eight million, five hundred forty-six thousand, six hundred thirty-eight".