13671380 has 24 divisors (see below), whose sum is σ = 28820232. Its totient is φ = 5447552.

The previous prime is 13671373. The next prime is 13671419. The reversal of 13671380 is 8317631.

13671380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3341584 + 10329796 = 1828^2 + 3214^2 .

It is a super-2 number, since 2×13671380² = 373813262208800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4694 + ... + 7026.

It is an arithmetic number, because the mean of its divisors is an integer number (1200843).

Almost surely, 2^13671380 is an apocalyptic number.

13671380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13671380 is an abundant number, since it is smaller than the sum of its proper divisors (15148852).

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

13671380 is a wasteful number, since it uses less digits than its factorization.

13671380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635 (or 2633 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 13671380 is about 3697.4829276144. The cubic root of 13671380 is about 239.1135120184.

The spelling of 13671380 in words is "thirteen million, six hundred seventy-one thousand, three hundred eighty".