1982505 has 32 divisors (see below), whose sum is σ = 3686400. Its totient is φ = 891072.

The previous prime is 1982501. The next prime is 1982509. The reversal of 1982505 is 5052891.

It is an interprime number because it is at equal distance from previous prime (1982501) and next prime (1982509).

It is not a de Polignac number, because 1982505 - 2² = 1982501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1982501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8176 + ... + 8414.

It is an arithmetic number, because the mean of its divisors is an integer number (115200).

2^1982505 is an apocalyptic number.

1982505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1982505 is a deficient number, since it is larger than the sum of its proper divisors (1703895).

1982505 is a wasteful number, since it uses less digits than its factorization.

1982505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 1982505 is about 1408.0145595838. The cubic root of 1982505 is about 125.6236565783.

The spelling of 1982505 in words is "one million, nine hundred eighty-two thousand, five hundred five".