1978932 has 12 divisors (see below), whose sum is σ = 4617536. Its totient is φ = 659640.

The previous prime is 1978927. The next prime is 1978981. The reversal of 1978932 is 2398791.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82444 + ... + 82467.

2^1978932 is an apocalyptic number.

1978932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1978932 is an abundant number, since it is smaller than the sum of its proper divisors (2638604).

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

1978932 is a wasteful number, since it uses less digits than its factorization.

1978932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164918 (or 164916 counting only the distinct ones).

The product of its digits is 27216, while the sum is 39.

The square root of 1978932 is about 1406.7451794835. The cubic root of 1978932 is about 125.5481421414.

The spelling of 1978932 in words is "one million, nine hundred seventy-eight thousand, nine hundred thirty-two".