85181888 has 28 divisors (see below), whose sum is σ = 184400952. Its totient is φ = 38718720.

The previous prime is 85181869. The next prime is 85181923. The reversal of 85181888 is 88818158.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59795 + ... + 61202.

Almost surely, 2^85181888 is an apocalyptic number.

85181888 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

85181888 is an abundant number, since it is smaller than the sum of its proper divisors (99219064).

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

85181888 is a wasteful number, since it uses less digits than its factorization.

85181888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121020 (or 121010 counting only the distinct ones).

The product of its digits is 163840, while the sum is 47.

The square root of 85181888 is about 9229.4034476774. The cubic root of 85181888 is about 439.9963636063.

The spelling of 85181888 in words is "eighty-five million, one hundred eighty-one thousand, eight hundred eighty-eight".