13840280 has 32 divisors (see below), whose sum is σ = 31330800. Its totient is φ = 5502336.

The previous prime is 13840271. The next prime is 13840327. The reversal of 13840280 is 8204831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6194 + ... + 8126.

Almost surely, 2^13840280 is an apocalyptic number.

13840280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13840280 is an abundant number, since it is smaller than the sum of its proper divisors (17490520).

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

13840280 is a wasteful number, since it uses less digits than its factorization.

13840280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2123 (or 2119 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 13840280 is about 3720.2526795905. The cubic root of 13840280 is about 240.0941760035.

The spelling of 13840280 in words is "thirteen million, eight hundred forty thousand, two hundred eighty".