228211646 has 32 divisors (see below), whose sum is σ = 387072000. Its totient is φ = 100182240.

The previous prime is 228211639. The next prime is 228211657. The reversal of 228211646 is 646112822.

228211646 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45155 + ... + 49953.

It is an arithmetic number, because the mean of its divisors is an integer number (12096000).

Almost surely, 2^228211646 is an apocalyptic number.

228211646 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

228211646 is a deficient number, since it is larger than the sum of its proper divisors (158860354).

228211646 is a wasteful number, since it uses less digits than its factorization.

228211646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4904.

The product of its digits is 9216, while the sum is 32.

The square root of 228211646 is about 15106.6755442751. The cubic root of 228211646 is about 611.1004466263.

The spelling of 228211646 in words is "two hundred twenty-eight million, two hundred eleven thousand, six hundred forty-six".