140321808 has 240 divisors, whose sum is σ = 472844736. Its totient is φ = 39813120.

The previous prime is 140321789. The next prime is 140321813. The reversal of 140321808 is 808123041.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 726960 + ... + 727152.

Almost surely, 2^140321808 is an apocalyptic number.

140321808 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 140321808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236422368).

140321808 is an abundant number, since it is smaller than the sum of its proper divisors (332522928).

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

140321808 is a wasteful number, since it uses less digits than its factorization.

140321808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 140321808 is about 11845.7506305004. The cubic root of 140321808 is about 519.6469595777.

Adding to 140321808 its reverse (808123041), we get a palindrome (948444849).

The spelling of 140321808 in words is "one hundred forty million, three hundred twenty-one thousand, eight hundred eight".