1521036 has 72 divisors (see below), whose sum is σ = 4402944. Its totient is φ = 438240.

The previous prime is 1521031. The next prime is 1521043. The reversal of 1521036 is 6301251.

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 (1521031) 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 23 ways as a sum of consecutive naturals, for example, 9025 + ... + 9191.

It is an arithmetic number, because the mean of its divisors is an integer number (61152).

2^1521036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1521036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2201472).

1521036 is an abundant number, since it is smaller than the sum of its proper divisors (2881908).

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

1521036 is a wasteful number, since it uses less digits than its factorization.

1521036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1521036 is about 1233.3028825070. The cubic root of 1521036 is about 115.0040578278.

Adding to 1521036 its reverse (6301251), we get a palindrome (7822287).

The spelling of 1521036 in words is "one million, five hundred twenty-one thousand, thirty-six".