11723467428 has 36 divisors (see below), whose sum is σ = 29641133340. Its totient is φ = 3906924096.

The previous prime is 11723467391. The next prime is 11723467453. The reversal of 11723467428 is 82476432711.

It can be written as a sum of positive squares in 2 ways, for example, as 8723933604 + 2999533824 = 93402^2 + 54768^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131818 + ... + 202046.

It is an arithmetic number, because the mean of its divisors is an integer number (823364815).

Almost surely, 2^11723467428 is an apocalyptic number.

11723467428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11723467428 is an abundant number, since it is smaller than the sum of its proper divisors (17917665912).

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

11723467428 is a wasteful number, since it uses less digits than its factorization.

11723467428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74876 (or 74871 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The spelling of 11723467428 in words is "eleven billion, seven hundred twenty-three million, four hundred sixty-seven thousand, four hundred twenty-eight".