11288705528 has 32 divisors (see below), whose sum is σ = 21983097600. Its totient is φ = 5430617952.

The previous prime is 11288705507. The next prime is 11288705557. The reversal of 11288705528 is 82550788211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232250 + ... + 276617.

It is an arithmetic number, because the mean of its divisors is an integer number (686971800).

Almost surely, 2^11288705528 is an apocalyptic number.

It is an amenable number.

11288705528 is a deficient number, since it is larger than the sum of its proper divisors (10694392072).

11288705528 is a wasteful number, since it uses less digits than its factorization.

11288705528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508979 (or 508975 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 47.

The spelling of 11288705528 in words is "eleven billion, two hundred eighty-eight million, seven hundred five thousand, five hundred twenty-eight".