13940724 has 24 divisors (see below), whose sum is σ = 37175488. Its totient is φ = 3983040.

The previous prime is 13940701. The next prime is 13940747. The reversal of 13940724 is 42704931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13940701) and next prime (13940747).

It is a junction number, because it is equal to n+sod(n) for n = 13940691 and 13940700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82897 + ... + 83064.

Almost surely, 2^13940724 is an apocalyptic number.

13940724 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13940724 is an abundant number, since it is smaller than the sum of its proper divisors (23234764).

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

13940724 is a wasteful number, since it uses less digits than its factorization.

13940724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165975 (or 165973 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 13940724 is about 3733.7278958167. The cubic root of 13940724 is about 240.6735938065.

The spelling of 13940724 in words is "thirteen million, nine hundred forty thousand, seven hundred twenty-four".