1978832 has 10 divisors (see below), whose sum is σ = 3834018. Its totient is φ = 989408.

The previous prime is 1978807. The next prime is 1978849. The reversal of 1978832 is 2388791.

It can be written as a sum of positive squares in only one way, i.e., 1860496 + 118336 = 1364^2 + 344^2 .

It is a zygodrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61823 + ... + 61854.

2^1978832 is an apocalyptic number.

It is an amenable number.

1978832 is a deficient number, since it is larger than the sum of its proper divisors (1855186).

1978832 is a wasteful number, since it uses less digits than its factorization.

1978832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123685 (or 123679 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 1978832 is about 1406.7096359946. The cubic root of 1978832 is about 125.5460273600.

The spelling of 1978832 in words is "one million, nine hundred seventy-eight thousand, eight hundred thirty-two".