13860240 has 40 divisors (see below), whose sum is σ = 42967488. Its totient is φ = 3696000.

The previous prime is 13860239. The next prime is 13860247. The reversal of 13860240 is 4206831.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 13860240.

It is not an unprimeable number, because it can be changed into a prime (13860247) by changing a digit.

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, 28636 + ... + 29115.

Almost surely, 2^13860240 is an apocalyptic number.

13860240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13860240 is an abundant number, since it is smaller than the sum of its proper divisors (29107248).

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

13860240 is a wasteful number, since it uses less digits than its factorization.

13860240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57767 (or 57761 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 13860240 is about 3722.9343265763. The cubic root of 13860240 is about 240.2095392245.

It can be divided in two parts, 138 and 60240, that added together give a triangular number (60378 = T₃₄₇).

The spelling of 13860240 in words is "thirteen million, eight hundred sixty thousand, two hundred forty".