228021006 has 16 divisors (see below), whose sum is σ = 456190848. Its totient is φ = 75982200.

The previous prime is 228020977. The next prime is 228021037. The reversal of 228021006 is 600120822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29751 + ... + 36621.

It is an arithmetic number, because the mean of its divisors is an integer number (28511928).

Almost surely, 2^228021006 is an apocalyptic number.

228021006 is an abundant number, since it is smaller than the sum of its proper divisors (228169842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228021006 is a wasteful number, since it uses less digits than its factorization.

228021006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12407.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 228021006 is about 15100.3644326884. The cubic root of 228021006 is about 610.9302352657.

Adding to 228021006 its reverse (600120822), we get a palindrome (828141828).

The spelling of 228021006 in words is "two hundred twenty-eight million, twenty-one thousand, six".