1978044 has 12 divisors (see below), whose sum is σ = 4615464. Its totient is φ = 659344.

The previous prime is 1978037. The next prime is 1978051. The reversal of 1978044 is 4408791.

It is an interprime number because it is at equal distance from previous prime (1978037) and next prime (1978051).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1977996 and 1978014.

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, 82407 + ... + 82430.

It is an arithmetic number, because the mean of its divisors is an integer number (384622).

2^1978044 is an apocalyptic number.

It is an amenable number.

1978044 is an abundant number, since it is smaller than the sum of its proper divisors (2637420).

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

1978044 is a wasteful number, since it uses less digits than its factorization.

1978044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164844 (or 164842 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 1978044 is about 1406.4295218745. The cubic root of 1978044 is about 125.5293603894.

The spelling of 1978044 in words is "one million, nine hundred seventy-eight thousand, forty-four".