13065720 has 32 divisors (see below), whose sum is σ = 39197520. Its totient is φ = 3484160.

The previous prime is 13065713. The next prime is 13065733. The reversal of 13065720 is 2756031.

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

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, 54321 + ... + 54560.

Almost surely, 2^13065720 is an apocalyptic number.

13065720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13065720 is an abundant number, since it is smaller than the sum of its proper divisors (26131800).

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

13065720 is a wasteful number, since it uses less digits than its factorization.

13065720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108895 (or 108891 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 13065720 is about 3614.6535103658. The cubic root of 13065720 is about 235.5290329828.

The spelling of 13065720 in words is "thirteen million, sixty-five thousand, seven hundred twenty".