228181597 has 16 divisors (see below), whose sum is σ = 272719872. Its totient is φ = 186666480.

The previous prime is 228181573. The next prime is 228181601. The reversal of 228181597 is 795181822.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-228181597 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 (228181517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86772 + ... + 89362.

It is an arithmetic number, because the mean of its divisors is an integer number (17044992).

Almost surely, 2^228181597 is an apocalyptic number.

It is an amenable number.

228181597 is a deficient number, since it is larger than the sum of its proper divisors (44538275).

228181597 is a wasteful number, since it uses less digits than its factorization.

228181597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3168.

The product of its digits is 80640, while the sum is 43.

The square root of 228181597 is about 15105.6809512183. The cubic root of 228181597 is about 611.0736239178.

The spelling of 228181597 in words is "two hundred twenty-eight million, one hundred eighty-one thousand, five hundred ninety-seven".