13729740 has 24 divisors (see below), whose sum is σ = 38443440. Its totient is φ = 3661248.

The previous prime is 13729739. The next prime is 13729741. The reversal of 13729740 is 4792731.

It is an interprime number because it is at equal distance from previous prime (13729739) and next prime (13729741).

It is not an unprimeable number, because it can be changed into a prime (13729741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114355 + ... + 114474.

It is an arithmetic number, because the mean of its divisors is an integer number (1601810).

Almost surely, 2^13729740 is an apocalyptic number.

13729740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13729740 is an abundant number, since it is smaller than the sum of its proper divisors (24713700).

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

13729740 is a wasteful number, since it uses less digits than its factorization.

13729740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228841 (or 228839 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 13729740 is about 3705.3663786460. The cubic root of 13729740 is about 239.4532693580.

The spelling of 13729740 in words is "thirteen million, seven hundred twenty-nine thousand, seven hundred forty".