13650720 has 48 divisors (see below), whose sum is σ = 43001280. Its totient is φ = 3640064.

The previous prime is 13650709. The next prime is 13650787. The reversal of 13650720 is 2705631.

It is a tau number, because it is divible by the number of its divisors (48).

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

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, 13740 + ... + 14699.

It is an arithmetic number, because the mean of its divisors is an integer number (895860).

Almost surely, 2^13650720 is an apocalyptic number.

13650720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13650720 is an abundant number, since it is smaller than the sum of its proper divisors (29350560).

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

13650720 is a wasteful number, since it uses less digits than its factorization.

13650720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28457 (or 28449 counting only the distinct ones).

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

The square root of 13650720 is about 3694.6880788505. The cubic root of 13650720 is about 238.9930029522.

The spelling of 13650720 in words is "thirteen million, six hundred fifty thousand, seven hundred twenty".