140344036 has 36 divisors (see below), whose sum is σ = 289176048. Its totient is φ = 59415888.

The previous prime is 140344019. The next prime is 140344049. The reversal of 140344036 is 630443041.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 140344036.

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, 11955 + ... + 20581.

It is an arithmetic number, because the mean of its divisors is an integer number (8032668).

Almost surely, 2^140344036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140344036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144588024).

140344036 is an abundant number, since it is smaller than the sum of its proper divisors (148832012).

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

140344036 is a wasteful number, since it uses less digits than its factorization.

140344036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8728 (or 8719 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 140344036 is about 11846.6888200881. The cubic root of 140344036 is about 519.6743967545.

Adding to 140344036 its reverse (630443041), we get a palindrome (770787077).

The spelling of 140344036 in words is "one hundred forty million, three hundred forty-four thousand, thirty-six".