13740228 has 18 divisors (see below), whose sum is σ = 34732334. Its totient is φ = 4580064.

The previous prime is 13740203. The next prime is 13740241. The reversal of 13740228 is 82204731.

It can be written as a sum of positive squares in only one way, i.e., 11614464 + 2125764 = 3408^2 + 1458^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 190801 + ... + 190872.

Almost surely, 2^13740228 is an apocalyptic number.

13740228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13740228 is an abundant number, since it is smaller than the sum of its proper divisors (20992106).

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

13740228 is a wasteful number, since it uses less digits than its factorization.

13740228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381683 (or 381678 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 13740228 is about 3706.7813531418. The cubic root of 13740228 is about 239.5142257608.

Adding to 13740228 its reverse (82204731), we get a palindrome (95944959).

The spelling of 13740228 in words is "thirteen million, seven hundred forty thousand, two hundred twenty-eight".