11728087436 has 24 divisors (see below), whose sum is σ = 22405721184. Its totient is φ = 5338811520.

The previous prime is 11728087429. The next prime is 11728087439. The reversal of 11728087436 is 63478082711.

It is a happy number.

It is a super-2 number, since 2×11728087436² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11728087439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1541000 + ... + 1548591.

It is an arithmetic number, because the mean of its divisors is an integer number (933571716).

Almost surely, 2^11728087436 is an apocalyptic number.

It is an amenable number.

11728087436 is a deficient number, since it is larger than the sum of its proper divisors (10677633748).

11728087436 is a wasteful number, since it uses less digits than its factorization.

11728087436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3089681 (or 3089679 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 11728087436 in words is "eleven billion, seven hundred twenty-eight million, eighty-seven thousand, four hundred thirty-six".