228402937156 has 6 divisors (see below), whose sum is σ = 399705140030. Its totient is φ = 114201468576.

The previous prime is 228402937151. The next prime is 228402937163. The reversal of 228402937156 is 651739204822.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 209458167556 + 18944769600 = 457666^2 + 137640^2 .

It is not an unprimeable number, because it can be changed into a prime (228402937151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28550367141 + ... + 28550367148.

It is a 1-persistent number, because it is pandigital, but 2⋅228402937156 = 456805874312 is not.

Almost surely, 2^228402937156 is an apocalyptic number.

It is an amenable number.

228402937156 is a deficient number, since it is larger than the sum of its proper divisors (171302202874).

228402937156 is a wasteful number, since it uses less digits than its factorization.

228402937156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57100734293 (or 57100734291 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 228402937156 in words is "two hundred twenty-eight billion, four hundred two million, nine hundred thirty-seven thousand, one hundred fifty-six".