228166156 has 6 divisors (see below), whose sum is σ = 399290780. Its totient is φ = 114083076.

The previous prime is 228166123. The next prime is 228166177. The reversal of 228166156 is 651661822.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28520766 + ... + 28520773.

Almost surely, 2^228166156 is an apocalyptic number.

It is an amenable number.

228166156 is a deficient number, since it is larger than the sum of its proper divisors (171124624).

228166156 is a wasteful number, since it uses less digits than its factorization.

228166156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57041543 (or 57041541 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 228166156 is about 15105.1698434675. The cubic root of 228166156 is about 611.0598398663.

The spelling of 228166156 in words is "two hundred twenty-eight million, one hundred sixty-six thousand, one hundred fifty-six".