140281344 has 120 divisors (see below), whose sum is σ = 462805200. Its totient is φ = 40071168.

The previous prime is 140281321. The next prime is 140281363. The reversal of 140281344 is 443182041.

140281344 is a `hidden beast` number, since 1 + 40 + 281 + 344 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30082 + ... + 34430.

It is an arithmetic number, because the mean of its divisors is an integer number (3856710).

Almost surely, 2^140281344 is an apocalyptic number.

140281344 is a gapful number since it is divisible by the number (14) 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 140281344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231402600).

140281344 is an abundant number, since it is smaller than the sum of its proper divisors (322523856).

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

140281344 is an equidigital number, since it uses as much as digits as its factorization.

140281344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4380 (or 4361 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 140281344 is about 11844.0425531150. The cubic root of 140281344 is about 519.5970053182.

It can be divided in two parts, 140281 and 344, that added together give a square (140625 = 375²).

The spelling of 140281344 in words is "one hundred forty million, two hundred eighty-one thousand, three hundred forty-four".