13139732 has 12 divisors (see below), whose sum is σ = 23206260. Its totient is φ = 6509376.

The previous prime is 13139723. The next prime is 13139741. The reversal of 13139732 is 23793131.

13139732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13139723) and next prime (13139741).

It can be written as a sum of positive squares in 2 ways, for example, as 4648336 + 8491396 = 2156^2 + 2914^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13139695 and 13139704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14633 + ... + 15504.

It is an arithmetic number, because the mean of its divisors is an integer number (1933855).

Almost surely, 2^13139732 is an apocalyptic number.

It is an amenable number.

13139732 is a deficient number, since it is larger than the sum of its proper divisors (10066528).

13139732 is a wasteful number, since it uses less digits than its factorization.

13139732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30250 (or 30248 counting only the distinct ones).

The product of its digits is 3402, while the sum is 29.

The square root of 13139732 is about 3624.8768254935. The cubic root of 13139732 is about 235.9729213401.

The spelling of 13139732 in words is "thirteen million, one hundred thirty-nine thousand, seven hundred thirty-two".