23896477728 has 54 divisors (see below), whose sum is σ = 67963069629. Its totient is φ = 7964618112.

The previous prime is 23896477723. The next prime is 23896477733. The reversal of 23896477728 is 82777469832.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

23896477728 is a `hidden beast` number, since 2 + 3 + 8 + 96 + 477 + 72 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (23896477723) and next prime (23896477733).

It can be written as a sum of positive squares in 2 ways, for example, as 19507150224 + 4389327504 = 139668^2 + 66252^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=109308.

It is not an unprimeable number, because it can be changed into a prime (23896477721) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2618838 + ... + 2627946.

Almost surely, 2^23896477728 is an apocalyptic number.

It is an amenable number.

23896477728 is an abundant number, since it is smaller than the sum of its proper divisors (44066591901).

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

23896477728 is an frugal number, since it uses more digits than its factorization.

23896477728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18234 (or 9114 counting only the distinct ones).

The product of its digits is 56899584, while the sum is 63.

The spelling of 23896477728 in words is "twenty-three billion, eight hundred ninety-six million, four hundred seventy-seven thousand, seven hundred twenty-eight".