1982285 has 8 divisors (see below), whose sum is σ = 2518776. Its totient is φ = 1492480.

The previous prime is 1982273. The next prime is 1982287. The reversal of 1982285 is 5822891.

It can be written as a sum of positive squares in 4 ways, for example, as 376996 + 1605289 = 614^2 + 1267^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1982285 - 2⁴ = 1982269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11576 + ... + 11745.

It is an arithmetic number, because the mean of its divisors is an integer number (314847).

2^1982285 is an apocalyptic number.

It is an amenable number.

1982285 is a deficient number, since it is larger than the sum of its proper divisors (536491).

1982285 is a wasteful number, since it uses less digits than its factorization.

1982285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23343.

The product of its digits is 11520, while the sum is 35.

The square root of 1982285 is about 1407.9364332242. The cubic root of 1982285 is about 125.6190095573.

Subtracting 1982285 from its reverse (5822891), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 1982285 in words is "one million, nine hundred eighty-two thousand, two hundred eighty-five".