13860550 has 72 divisors (see below), whose sum is σ = 29685600. Its totient is φ = 4804800.

The previous prime is 13860541. The next prime is 13860551. The reversal of 13860550 is 5506831.

13860550 = 73² + 74² + ... + 347².

It is a super-2 number, since 2×13860550² = 384229692605000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13860551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 175411 + ... + 175489.

It is an arithmetic number, because the mean of its divisors is an integer number (412300).

Almost surely, 2^13860550 is an apocalyptic number.

13860550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13860550 is an abundant number, since it is smaller than the sum of its proper divisors (15825050).

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

13860550 is a wasteful number, since it uses less digits than its factorization.

13860550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 13860550 is about 3722.9759601695. The cubic root of 13860550 is about 240.2113300641.

The spelling of 13860550 in words is "thirteen million, eight hundred sixty thousand, five hundred fifty".