13720230 has 48 divisors (see below), whose sum is σ = 35936784. Its totient is φ = 3631680.

The previous prime is 13720211. The next prime is 13720247. The reversal of 13720230 is 3202731.

13720230 is nontrivially palindromic in base 8.

13720230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13720230² = 376489422505800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

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, 13645 + ... + 14615.

It is an arithmetic number, because the mean of its divisors is an integer number (748683).

Almost surely, 2^13720230 is an apocalyptic number.

13720230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13720230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17968392).

13720230 is an abundant number, since it is smaller than the sum of its proper divisors (22216554).

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

13720230 is a wasteful number, since it uses less digits than its factorization.

13720230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141 (or 1138 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 13720230 is about 3704.0828824420. The cubic root of 13720230 is about 239.3979702635.

Adding to 13720230 its reverse (3202731), we get a palindrome (16922961).

The spelling of 13720230 in words is "thirteen million, seven hundred twenty thousand, two hundred thirty".