1978232 has 8 divisors (see below), whose sum is σ = 3709200. Its totient is φ = 989112.

The previous prime is 1978219. The next prime is 1978267. The reversal of 1978232 is 2328791.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

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 as a sum of consecutive naturals, namely, 123632 + ... + 123647.

It is an arithmetic number, because the mean of its divisors is an integer number (463650).

2^1978232 is an apocalyptic number.

It is an amenable number.

1978232 is a deficient number, since it is larger than the sum of its proper divisors (1730968).

1978232 is a wasteful number, since it uses less digits than its factorization.

1978232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247285 (or 247281 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 1978232 is about 1406.4963561986. The cubic root of 1978232 is about 125.5333371752.

The spelling of 1978232 in words is "one million, nine hundred seventy-eight thousand, two hundred thirty-two".