1013508 has 36 divisors (see below), whose sum is σ = 2620800. Its totient is φ = 330096.

The previous prime is 1013503. The next prime is 1013527. The reversal of 1013508 is 8053101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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 (1013501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1393 + ... + 1991.

It is an arithmetic number, because the mean of its divisors is an integer number (72800).

2^1013508 is an apocalyptic number.

1013508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1013508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1310400).

1013508 is an abundant number, since it is smaller than the sum of its proper divisors (1607292).

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

1013508 is a wasteful number, since it uses less digits than its factorization.

1013508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656 (or 651 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1013508 is about 1006.7313445006. The cubic root of 1013508 is about 100.4482543448.

Adding to 1013508 its reverse (8053101), we get a palindrome (9066609).

It can be divided in two parts, 1013 and 508, that added together give a square (1521 = 39²).

The spelling of 1013508 in words is "one million, thirteen thousand, five hundred eight".