140644000 has 96 divisors (see below), whose sum is σ = 395006976. Its totient is φ = 48211200.

The previous prime is 140643977. The next prime is 140644001. The reversal of 140644000 is 446041.

It is not an unprimeable number, because it can be changed into a prime (140644001) 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, 25489 + ... + 30511.

It is an arithmetic number, because the mean of its divisors is an integer number (4114656).

Almost surely, 2^140644000 is an apocalyptic number.

140644000 is a gapful number since it is divisible by the number (10) 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 140644000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197503488).

140644000 is an abundant number, since it is smaller than the sum of its proper divisors (254362976).

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

140644000 is an equidigital number, since it uses as much as digits as its factorization.

140644000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5055 (or 5037 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 140644000 is about 11859.3423089141. The cubic root of 140644000 is about 520.0443749113.

The spelling of 140644000 in words is "one hundred forty million, six hundred forty-four thousand".