88821138 has 32 divisors (see below), whose sum is σ = 209571840. Its totient is φ = 24558480.

The previous prime is 88821079. The next prime is 88821151. The reversal of 88821138 is 83112888.

It is a junction number, because it is equal to n+sod(n) for n = 88821096 and 88821105.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 32808 + ... + 35411.

It is an arithmetic number, because the mean of its divisors is an integer number (6549120).

Almost surely, 2^88821138 is an apocalyptic number.

88821138 is an abundant number, since it is smaller than the sum of its proper divisors (120750702).

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

88821138 is a wasteful number, since it uses less digits than its factorization.

88821138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68262.

The product of its digits is 24576, while the sum is 39.

The square root of 88821138 is about 9424.4966974370. The cubic root of 88821138 is about 446.1752178747.

The spelling of 88821138 in words is "eighty-eight million, eight hundred twenty-one thousand, one hundred thirty-eight".