13699140 has 144 divisors (see below), whose sum is σ = 47714688. Its totient is φ = 2875392.

The previous prime is 13699129. The next prime is 13699159. The reversal of 13699140 is 4199631.

13699140 = T₄₉ + T₅₀ + ... + T₄₃₄.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70884 + ... + 71076.

It is an arithmetic number, because the mean of its divisors is an integer number (331352).

Almost surely, 2^13699140 is an apocalyptic number.

13699140 is a gapful number since it is divisible by the number (10) 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 13699140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23857344).

13699140 is an abundant number, since it is smaller than the sum of its proper divisors (34015548).

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

13699140 is a wasteful number, since it uses less digits than its factorization.

13699140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 13699140 is about 3701.2349290473. The cubic root of 13699140 is about 239.2752441292.

It can be divided in two parts, 13 and 699140, that added together give a triangular number (699153 = T₁₁₈₂).

The spelling of 13699140 in words is "thirteen million, six hundred ninety-nine thousand, one hundred forty".