13748520 has 32 divisors (see below), whose sum is σ = 41245920. Its totient is φ = 3666240.

The previous prime is 13748513. The next prime is 13748521. The reversal of 13748520 is 2584731.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (13748521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57166 + ... + 57405.

It is an arithmetic number, because the mean of its divisors is an integer number (1288935).

Almost surely, 2^13748520 is an apocalyptic number.

13748520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13748520 is an abundant number, since it is smaller than the sum of its proper divisors (27497400).

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

13748520 is a wasteful number, since it uses less digits than its factorization.

13748520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114585 (or 114581 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 13748520 is about 3707.8996750182. The cubic root of 13748520 is about 239.5623970279.

The spelling of 13748520 in words is "thirteen million, seven hundred forty-eight thousand, five hundred twenty".