228143100 has 36 divisors (see below), whose sum is σ = 660094904. Its totient is φ = 60838080.

The previous prime is 228143099. The next prime is 228143129. The reversal of 228143100 is 1341822.

It is a super-2 number, since 2×228143100² = 104098548155220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 379939 + ... + 380538.

Almost surely, 2^228143100 is an apocalyptic number.

228143100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

228143100 is an abundant number, since it is smaller than the sum of its proper divisors (431951804).

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

228143100 is a wasteful number, since it uses less digits than its factorization.

228143100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760494 (or 760487 counting only the distinct ones).

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

The square root of 228143100 is about 15104.4066417718. The cubic root of 228143100 is about 611.0392568104.

Adding to 228143100 its reverse (1341822), we get a palindrome (229484922).

The spelling of 228143100 in words is "two hundred twenty-eight million, one hundred forty-three thousand, one hundred".