228177136 has 80 divisors (see below), whose sum is σ = 500467968. Its totient is φ = 99878400.

The previous prime is 228177121. The next prime is 228177161. The reversal of 228177136 is 631771822.

It is a junction number, because it is equal to n+sod(n) for n = 228177095 and 228177104.

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, 743095 + ... + 743401.

Almost surely, 2^228177136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228177136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250233984).

228177136 is an abundant number, since it is smaller than the sum of its proper divisors (272290832).

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

228177136 is a wasteful number, since it uses less digits than its factorization.

228177136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 464 counting only the distinct ones).

The product of its digits is 28224, while the sum is 37.

The square root of 228177136 is about 15105.5332908176. The cubic root of 228177136 is about 611.0696416843.

The spelling of 228177136 in words is "two hundred twenty-eight million, one hundred seventy-seven thousand, one hundred thirty-six".