1820524 has 12 divisors (see below), whose sum is σ = 3233944. Its totient is φ = 896544.

The previous prime is 1820521. The next prime is 1820527. The reversal of 1820524 is 4250281.

It is an interprime number because it is at equal distance from previous prime (1820521) and next prime (1820527).

It is a junction number, because it is equal to n+sod(n) for n = 1820495 and 1820504.

It is not an unprimeable number, because it can be changed into a prime (1820521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3129 + ... + 3664.

2^1820524 is an apocalyptic number.

It is an amenable number.

1820524 is a deficient number, since it is larger than the sum of its proper divisors (1413420).

1820524 is a wasteful number, since it uses less digits than its factorization.

1820524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6864 (or 6862 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1820524 is about 1349.2679496675. The cubic root of 1820524 is about 122.1046311924.

The spelling of 1820524 in words is "one million, eight hundred twenty thousand, five hundred twenty-four".