88143840 has 72 divisors (see below), whose sum is σ = 300795768. Its totient is φ = 23504640.

The previous prime is 88143787. The next prime is 88143863. The reversal of 88143840 is 4834188.

88143840 is nontrivially palindromic in base 11.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 88143795 and 88143804.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 29166 + ... + 32045.

It is an arithmetic number, because the mean of its divisors is an integer number (4177719).

Almost surely, 2^88143840 is an apocalyptic number.

88143840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

88143840 is an abundant number, since it is smaller than the sum of its proper divisors (212651928).

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

88143840 is a wasteful number, since it uses less digits than its factorization.

88143840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61232 (or 61221 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 88143840 is about 9388.4950870733. The cubic root of 88143840 is about 445.0382326281.

The spelling of 88143840 in words is "eighty-eight million, one hundred forty-three thousand, eight hundred forty".