13940140 has 24 divisors (see below), whose sum is σ = 29689632. Its totient is φ = 5496960.

The previous prime is 13940117. The next prime is 13940177. The reversal of 13940140 is 4104931.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3489 + ... + 6328.

It is an arithmetic number, because the mean of its divisors is an integer number (1237068).

Almost surely, 2^13940140 is an apocalyptic number.

13940140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13940140 is an abundant number, since it is smaller than the sum of its proper divisors (15749492).

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

13940140 is a wasteful number, since it uses less digits than its factorization.

13940140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9897 (or 9895 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 13940140 is about 3733.6496889773. The cubic root of 13940140 is about 240.6702330212.

The spelling of 13940140 in words is "thirteen million, nine hundred forty thousand, one hundred forty".