13139740 has 24 divisors (see below), whose sum is σ = 27694800. Its totient is φ = 5236608.

The previous prime is 13139723. The next prime is 13139741. The reversal of 13139740 is 4793131.

It is a junction number, because it is equal to n+sod(n) for n = 13139699 and 13139708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13139741) by changing a digit.

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, 5211 + ... + 7309.

It is an arithmetic number, because the mean of its divisors is an integer number (1153950).

Almost surely, 2^13139740 is an apocalyptic number.

13139740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13139740 is an abundant number, since it is smaller than the sum of its proper divisors (14555060).

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

13139740 is a wasteful number, since it uses less digits than its factorization.

13139740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 13139740 is about 3624.8779289791. The cubic root of 13139740 is about 235.9729692301.

The spelling of 13139740 in words is "thirteen million, one hundred thirty-nine thousand, seven hundred forty".