88728785 has 4 divisors (see below), whose sum is σ = 106474548. Its totient is φ = 70983024.

The previous prime is 88728781. The next prime is 88728821. The reversal of 88728785 is 58782788.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14010049 + 74718736 = 3743^2 + 8644^2 .

It is a cyclic number.

It is not a de Polignac number, because 88728785 - 2² = 88728781 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88728781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8872874 + ... + 8872883.

It is an arithmetic number, because the mean of its divisors is an integer number (26618637).

Almost surely, 2^88728785 is an apocalyptic number.

It is an amenable number.

88728785 is a deficient number, since it is larger than the sum of its proper divisors (17745763).

88728785 is a wasteful number, since it uses less digits than its factorization.

88728785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17745762.

The product of its digits is 2007040, while the sum is 53.

The square root of 88728785 is about 9419.5957981221. The cubic root of 88728785 is about 446.0205253077.

The spelling of 88728785 in words is "eighty-eight million, seven hundred twenty-eight thousand, seven hundred eighty-five".