13671520 has 24 divisors (see below), whose sum is σ = 32299344. Its totient is φ = 5468544.

The previous prime is 13671487. The next prime is 13671521. The reversal of 13671520 is 2517631.

It is a super-2 number, since 2×13671520² = 373820918220800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13671521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42564 + ... + 42883.

It is an arithmetic number, because the mean of its divisors is an integer number (1345806).

Almost surely, 2^13671520 is an apocalyptic number.

13671520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13671520 is an abundant number, since it is smaller than the sum of its proper divisors (18627824).

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

13671520 is an equidigital number, since it uses as much as digits as its factorization.

13671520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85462 (or 85454 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 13671520 is about 3697.5018593640. The cubic root of 13671520 is about 239.1143282193.

The spelling of 13671520 in words is "thirteen million, six hundred seventy-one thousand, five hundred twenty".