228161077 has 8 divisors (see below), whose sum is σ = 233366400. Its totient is φ = 222970464.

The previous prime is 228161071. The next prime is 228161093. The reversal of 228161077 is 770161822.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228161077 - 2¹⁵ = 228128309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228161071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31449 + ... + 38017.

It is an arithmetic number, because the mean of its divisors is an integer number (29170800).

Almost surely, 2^228161077 is an apocalyptic number.

It is an amenable number.

228161077 is a deficient number, since it is larger than the sum of its proper divisors (5205323).

228161077 is an equidigital number, since it uses as much as digits as its factorization.

228161077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7355.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 228161077 is about 15105.0017212842. The cubic root of 228161077 is about 611.0553057496.

The spelling of 228161077 in words is "two hundred twenty-eight million, one hundred sixty-one thousand, seventy-seven".