140315640 has 64 divisors (see below), whose sum is σ = 439257600. Its totient is φ = 35789952.

The previous prime is 140315639. The next prime is 140315683. The reversal of 140315640 is 46513041.

140315640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 140315640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22660 + ... + 28179.

It is an arithmetic number, because the mean of its divisors is an integer number (6863400).

Almost surely, 2^140315640 is an apocalyptic number.

140315640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140315640 is an abundant number, since it is smaller than the sum of its proper divisors (298941960).

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

140315640 is a wasteful number, since it uses less digits than its factorization.

140315640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50876 (or 50872 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 140315640 is about 11845.4902811154. The cubic root of 140315640 is about 519.6393455809.

140315640 divided by its sum of digits (24) gives a palindrome (5846485).

Adding to 140315640 its reverse (46513041), we get a palindrome (186828681).

The spelling of 140315640 in words is "one hundred forty million, three hundred fifteen thousand, six hundred forty".