1982478 has 8 divisors (see below), whose sum is σ = 3964968. Its totient is φ = 660824.

The previous prime is 1982471. The next prime is 1982501. The reversal of 1982478 is 8742891.

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

1982478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165201 + ... + 165212.

It is an arithmetic number, because the mean of its divisors is an integer number (495621).

2^1982478 is an apocalyptic number.

1982478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1982478 is a wasteful number, since it uses less digits than its factorization.

1982478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330418.

The product of its digits is 32256, while the sum is 39.

The square root of 1982478 is about 1408.0049715821. The cubic root of 1982478 is about 125.6230862806.

The spelling of 1982478 in words is "one million, nine hundred eighty-two thousand, four hundred seventy-eight".