13990716 has 72 divisors (see below), whose sum is σ = 37643424. Its totient is φ = 4371840.

The previous prime is 13990687. The next prime is 13990721. The reversal of 13990716 is 61709931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50370 + ... + 50646.

Almost surely, 2^13990716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13990716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18821712).

13990716 is an abundant number, since it is smaller than the sum of its proper divisors (23652708).

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

13990716 is a wasteful number, since it uses less digits than its factorization.

13990716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 13990716 is about 3740.4165543426. The cubic root of 13990716 is about 240.9609390158.

It can be divided in two parts, 13990 and 716, that added together give a triangular number (14706 = T₁₇₁).

The spelling of 13990716 in words is "thirteen million, nine hundred ninety thousand, seven hundred sixteen".