140326440 has 128 divisors (see below), whose sum is σ = 434125440. Its totient is φ = 36274176.

The previous prime is 140326421. The next prime is 140326441. The reversal of 140326440 is 44623041.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 140326440.

It is not an unprimeable number, because it can be changed into a prime (140326441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 726984 + ... + 727176.

It is an arithmetic number, because the mean of its divisors is an integer number (3391605).

Almost surely, 2^140326440 is an apocalyptic number.

140326440 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 140326440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217062720).

140326440 is an abundant number, since it is smaller than the sum of its proper divisors (293799000).

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

140326440 is a wasteful number, since it uses less digits than its factorization.

140326440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 140326440 is about 11845.9461420353. The cubic root of 140326440 is about 519.6526773353.

Adding to 140326440 its reverse (44623041), we get a palindrome (184949481).

The spelling of 140326440 in words is "one hundred forty million, three hundred twenty-six thousand, four hundred forty".