11438729328 has 80 divisors (see below), whose sum is σ = 32206688640. Its totient is φ = 3477188352.

The previous prime is 11438729321. The next prime is 11438729369. The reversal of 11438729328 is 82392783411.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11438729321) 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, 58638 + ... + 162221.

It is an arithmetic number, because the mean of its divisors is an integer number (402583608).

Almost surely, 2^11438729328 is an apocalyptic number.

It is an amenable number.

11438729328 is an abundant number, since it is smaller than the sum of its proper divisors (20767959312).

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

11438729328 is a wasteful number, since it uses less digits than its factorization.

11438729328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220966 (or 220960 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The spelling of 11438729328 in words is "eleven billion, four hundred thirty-eight million, seven hundred twenty-nine thousand, three hundred twenty-eight".