13501530 has 96 divisors (see below), whose sum is σ = 41558400. Its totient is φ = 2975616.

The previous prime is 13501517. The next prime is 13501531. The reversal of 13501530 is 3510531.

It is a happy number.

13501530 is a `hidden beast` number, since 135 + 0 + 1 + 530 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (13501531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17901 + ... + 18639.

It is an arithmetic number, because the mean of its divisors is an integer number (432900).

Almost surely, 2^13501530 is an apocalyptic number.

13501530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13501530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20779200).

13501530 is an abundant number, since it is smaller than the sum of its proper divisors (28056870).

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

13501530 is a wasteful number, since it uses less digits than its factorization.

13501530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 13501530 is about 3674.4428149041. The cubic root of 13501530 is about 238.1191527281.

Subtracting from 13501530 its reverse (3510531), we obtain a palindrome (9990999).

The spelling of 13501530 in words is "thirteen million, five hundred one thousand, five hundred thirty".