140309936 has 80 divisors (see below), whose sum is σ = 309146880. Its totient is φ = 61205760.

The previous prime is 140309929. The next prime is 140309951. The reversal of 140309936 is 639903041.

140309936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 140309896 and 140309905.

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, 664871 + ... + 665081.

It is an arithmetic number, because the mean of its divisors is an integer number (3864336).

Almost surely, 2^140309936 is an apocalyptic number.

140309936 is a gapful number since it is divisible by the number (16) 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 140309936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154573440).

140309936 is an abundant number, since it is smaller than the sum of its proper divisors (168836944).

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

140309936 is a wasteful number, since it uses less digits than its factorization.

140309936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 140309936 is about 11845.2495119352. The cubic root of 140309936 is about 519.6323041634.

The spelling of 140309936 in words is "one hundred forty million, three hundred nine thousand, nine hundred thirty-six".