1971996 has 24 divisors (see below), whose sum is σ = 4955664. Its totient is φ = 606720.

The previous prime is 1971967. The next prime is 1972007. The reversal of 1971996 is 6991791.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6165 + ... + 6476.

It is an arithmetic number, because the mean of its divisors is an integer number (206486).

2^1971996 is an apocalyptic number.

It is an amenable number.

1971996 is an abundant number, since it is smaller than the sum of its proper divisors (2983668).

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

1971996 is a wasteful number, since it uses less digits than its factorization.

1971996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12661 (or 12659 counting only the distinct ones).

The product of its digits is 30618, while the sum is 42.

The square root of 1971996 is about 1404.2777503044. The cubic root of 1971996 is about 125.4012916747.

The spelling of 1971996 in words is "one million, nine hundred seventy-one thousand, nine hundred ninety-six".