140807808 has 128 divisors (see below), whose sum is σ = 421545600. Its totient is φ = 46842624.

The previous prime is 140807801. The next prime is 140807809. The reversal of 140807808 is 808708041.

It is a tau number, because it is divible by the number of its divisors (128).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140807801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279685 + ... + 280187.

It is an arithmetic number, because the mean of its divisors is an integer number (3293325).

Almost surely, 2^140807808 is an apocalyptic number.

140807808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140807808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210772800).

140807808 is an abundant number, since it is smaller than the sum of its proper divisors (280737792).

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

140807808 is an frugal number, since it uses more digits than its factorization.

140807808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 140807808 is about 11866.2465843248. The cubic root of 140807808 is about 520.2461950571.

The spelling of 140807808 in words is "one hundred forty million, eight hundred seven thousand, eight hundred eight".