88729728 has 32 divisors (see below), whose sum is σ = 235689360. Its totient is φ = 29576448.

The previous prime is 88729723. The next prime is 88729757. The reversal of 88729728 is 82792788.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (88729721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115150 + ... + 115917.

Almost surely, 2^88729728 is an apocalyptic number.

It is an amenable number.

88729728 is an abundant number, since it is smaller than the sum of its proper divisors (146959632).

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

88729728 is a wasteful number, since it uses less digits than its factorization.

88729728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231084 (or 231072 counting only the distinct ones).

The product of its digits is 903168, while the sum is 51.

The square root of 88729728 is about 9419.6458532155. The cubic root of 88729728 is about 446.0221053882.

The spelling of 88729728 in words is "eighty-eight million, seven hundred twenty-nine thousand, seven hundred twenty-eight".