228762137528 has 8 divisors (see below), whose sum is σ = 428929007880. Its totient is φ = 114381068760.

The previous prime is 228762137509. The next prime is 228762137531. The reversal of 228762137528 is 825731267822.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 228762137528.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14297633588 + ... + 14297633603.

It is an arithmetic number, because the mean of its divisors is an integer number (53616125985).

Almost surely, 2^228762137528 is an apocalyptic number.

It is an amenable number.

228762137528 is a deficient number, since it is larger than the sum of its proper divisors (200166870352).

228762137528 is a wasteful number, since it uses less digits than its factorization.

228762137528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28595267197 (or 28595267193 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 53.

The spelling of 228762137528 in words is "two hundred twenty-eight billion, seven hundred sixty-two million, one hundred thirty-seven thousand, five hundred twenty-eight".