228701063529 has 27 divisors (see below), whose sum is σ = 350958590437. Its totient is φ = 143483403264.

The previous prime is 228701063527. The next prime is 228701063537. The reversal of 228701063529 is 925360107822.

The square root of 228701063529 is 478227.

It is a perfect power (a square), and thus also a powerful number.

228701063529 is a `hidden beast` number, since 2 + 2 + 8 + 7 + 0 + 1 + 0 + 635 + 2 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5274681129 + 223426382400 = 72627^2 + 472680^2 .

It is not a de Polignac number, because 228701063529 - 2¹ = 228701063527 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228701063527) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 24384889 + ... + 24394265.

Almost surely, 2^228701063529 is an apocalyptic number.

228701063529 is the 478227-th square number.

228701063529 is the 239114-th centered octagonal number.

It is an amenable number.

228701063529 is a deficient number, since it is larger than the sum of its proper divisors (122257526908).

228701063529 is an frugal number, since it uses more digits than its factorization.

228701063529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18794 (or 9397 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 228701063529 in words is "two hundred twenty-eight billion, seven hundred one million, sixty-three thousand, five hundred twenty-nine".