1978104 has 16 divisors (see below), whose sum is σ = 4945320. Its totient is φ = 659360.

The previous prime is 1978091. The next prime is 1978111. The reversal of 1978104 is 4018791.

It is a super-3 number, since 3×1978104³ = 23220342333573806592, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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, 41187 + ... + 41234.

2^1978104 is an apocalyptic number.

It is an amenable number.

1978104 is an abundant number, since it is smaller than the sum of its proper divisors (2967216).

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

1978104 is a wasteful number, since it uses less digits than its factorization.

1978104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82430 (or 82426 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 1978104 is about 1406.4508523230. The cubic root of 1978104 is about 125.5306296037.

The spelling of 1978104 in words is "one million, nine hundred seventy-eight thousand, one hundred four".