1521836 has 6 divisors (see below), whose sum is σ = 2663220. Its totient is φ = 760916.

The previous prime is 1521809. The next prime is 1521853. The reversal of 1521836 is 6381251.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 190226 + ... + 190233.

It is an arithmetic number, because the mean of its divisors is an integer number (443870).

2^1521836 is an apocalyptic number.

It is an amenable number.

1521836 is a deficient number, since it is larger than the sum of its proper divisors (1141384).

1521836 is a wasteful number, since it uses less digits than its factorization.

1521836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380463 (or 380461 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 1521836 is about 1233.6271722040. The cubic root of 1521836 is about 115.0242167022.

The spelling of 1521836 in words is "one million, five hundred twenty-one thousand, eight hundred thirty-six".