228663630690 has 32 divisors (see below), whose sum is σ = 598682961216. Its totient is φ = 55433607360.

The previous prime is 228663630677. The next prime is 228663630691. The reversal of 228663630690 is 96036366822.

It is a super-2 number, since 2×228663630690² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228663630691) 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, 346459717 + ... + 346460376.

It is an arithmetic number, because the mean of its divisors is an integer number (18708842538).

Almost surely, 2^228663630690 is an apocalyptic number.

228663630690 is an abundant number, since it is smaller than the sum of its proper divisors (370019330526).

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

228663630690 is a wasteful number, since it uses less digits than its factorization.

228663630690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692920114.

The product of its (nonzero) digits is 3359232, while the sum is 51.

The spelling of 228663630690 in words is "two hundred twenty-eight billion, six hundred sixty-three million, six hundred thirty thousand, six hundred ninety".