1978046 has 16 divisors (see below), whose sum is σ = 3538944. Its totient is φ = 810744.

The previous prime is 1978037. The next prime is 1978051. The reversal of 1978046 is 6408791.

It is a junction number, because it is equal to n+sod(n) for n = 1977997 and 1978015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2750 + ... + 3393.

It is an arithmetic number, because the mean of its divisors is an integer number (221184).

2^1978046 is an apocalyptic number.

1978046 is a deficient number, since it is larger than the sum of its proper divisors (1560898).

1978046 is a wasteful number, since it uses less digits than its factorization.

1978046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6175.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1978046 is about 1406.4302328946. The cubic root of 1978046 is about 125.5294026970.

The spelling of 1978046 in words is "one million, nine hundred seventy-eight thousand, forty-six".