23011728428 has 24 divisors (see below), whose sum is σ = 45919333152. Its totient is φ = 9996044544.

The previous prime is 23011728409. The next prime is 23011728437. The reversal of 23011728428 is 82482711032.

It is a junction number, because it is equal to n+sod(n) for n = 23011728391 and 23011728400.

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, 13014800 + ... + 13016567.

It is an arithmetic number, because the mean of its divisors is an integer number (1913305548).

Almost surely, 2^23011728428 is an apocalyptic number.

It is an amenable number.

23011728428 is a deficient number, since it is larger than the sum of its proper divisors (22907604724).

23011728428 is a wasteful number, since it uses less digits than its factorization.

23011728428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26031401 (or 26031399 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The spelling of 23011728428 in words is "twenty-three billion, eleven million, seven hundred twenty-eight thousand, four hundred twenty-eight".