13870736 has 40 divisors (see below), whose sum is σ = 29890944. Its totient is φ = 6181760.

The previous prime is 13870721. The next prime is 13870757. The reversal of 13870736 is 63707831.

It is a junction number, because it is equal to n+sod(n) for n = 13870696 and 13870705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8585 + ... + 10071.

Almost surely, 2^13870736 is an apocalyptic number.

13870736 is a gapful number since it is divisible by the number (16) 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 13870736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14945472).

13870736 is an abundant number, since it is smaller than the sum of its proper divisors (16020208).

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

13870736 is a wasteful number, since it uses less digits than its factorization.

13870736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559 (or 1553 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 13870736 is about 3724.3437005733. The cubic root of 13870736 is about 240.2701587416.

The spelling of 13870736 in words is "thirteen million, eight hundred seventy thousand, seven hundred thirty-six".