88399728 has 80 divisors (see below), whose sum is σ = 268688160. Its totient is φ = 27730944.

The previous prime is 88399721. The next prime is 88399769. The reversal of 88399728 is 82799388.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88399721) 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, 1326 + ... + 13362.

It is an arithmetic number, because the mean of its divisors is an integer number (3358602).

Almost surely, 2^88399728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 88399728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134344080).

88399728 is an abundant number, since it is smaller than the sum of its proper divisors (180288432).

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

88399728 is a wasteful number, since it uses less digits than its factorization.

88399728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12071 (or 12059 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 88399728 is about 9402.1129540120. The cubic root of 88399728 is about 445.4684760426.

The spelling of 88399728 in words is "eighty-eight million, three hundred ninety-nine thousand, seven hundred twenty-eight".