88389640 has 16 divisors (see below), whose sum is σ = 198876780. Its totient is φ = 35355840.

The previous prime is 88389619. The next prime is 88389659. The reversal of 88389640 is 4698388.

It can be written as a sum of positive squares in 2 ways, for example, as 85784644 + 2604996 = 9262^2 + 1614^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1104831 + ... + 1104910.

Almost surely, 2^88389640 is an apocalyptic number.

It is an amenable number.

88389640 is an abundant number, since it is smaller than the sum of its proper divisors (110487140).

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

88389640 is a wasteful number, since it uses less digits than its factorization.

88389640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2209752 (or 2209748 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 88389640 is about 9401.5764635512. The cubic root of 88389640 is about 445.4515300744.

The spelling of 88389640 in words is "eighty-eight million, three hundred eighty-nine thousand, six hundred forty".