13691088 has 60 divisors (see below), whose sum is σ = 39564928. Its totient is φ = 4415040.

The previous prime is 13691033. The next prime is 13691107. The reversal of 13691088 is 88019631.

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 11 ways as a sum of consecutive naturals, for example, 2931 + ... + 5997.

Almost surely, 2^13691088 is an apocalyptic number.

13691088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13691088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19782464).

13691088 is an abundant number, since it is smaller than the sum of its proper divisors (25873840).

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

13691088 is a wasteful number, since it uses less digits than its factorization.

13691088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3112 (or 3103 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 13691088 is about 3700.1470241059. The cubic root of 13691088 is about 239.2283550090.

The spelling of 13691088 in words is "thirteen million, six hundred ninety-one thousand, eighty-eight".