1978296 has 32 divisors (see below), whose sum is σ = 5107200. Its totient is φ = 637920.

The previous prime is 1978289. The next prime is 1978297. The reversal of 1978296 is 6928791.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1978297) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 586 + ... + 2073.

It is an arithmetic number, because the mean of its divisors is an integer number (159600).

2^1978296 is an apocalyptic number.

It is an amenable number.

1978296 is an abundant number, since it is smaller than the sum of its proper divisors (3128904).

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

1978296 is a wasteful number, since it uses less digits than its factorization.

1978296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699 (or 2695 counting only the distinct ones).

The product of its digits is 54432, while the sum is 42.

The square root of 1978296 is about 1406.5191075844. The cubic root of 1978296 is about 125.5346909172.

The spelling of 1978296 in words is "one million, nine hundred seventy-eight thousand, two hundred ninety-six".