228129116 has 6 divisors (see below), whose sum is σ = 399225960. Its totient is φ = 114064556.

The previous prime is 228129107. The next prime is 228129133. The reversal of 228129116 is 611921822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28516136 + ... + 28516143.

It is an arithmetic number, because the mean of its divisors is an integer number (66537660).

Almost surely, 2^228129116 is an apocalyptic number.

It is an amenable number.

228129116 is a deficient number, since it is larger than the sum of its proper divisors (171096844).

228129116 is a wasteful number, since it uses less digits than its factorization.

228129116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57032283 (or 57032281 counting only the distinct ones).

The product of its digits is 3456, while the sum is 32.

The square root of 228129116 is about 15103.9437234121. The cubic root of 228129116 is about 611.0267720328.

The spelling of 228129116 in words is "two hundred twenty-eight million, one hundred twenty-nine thousand, one hundred sixteen".