1972856 has 8 divisors (see below), whose sum is σ = 3699120. Its totient is φ = 986424.

The previous prime is 1972849. The next prime is 1972889. The reversal of 1972856 is 6582791.

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

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 as a sum of consecutive naturals, namely, 123296 + ... + 123311.

It is an arithmetic number, because the mean of its divisors is an integer number (462390).

2^1972856 is an apocalyptic number.

It is an amenable number.

1972856 is a deficient number, since it is larger than the sum of its proper divisors (1726264).

1972856 is a wasteful number, since it uses less digits than its factorization.

1972856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246613 (or 246609 counting only the distinct ones).

The product of its digits is 30240, while the sum is 38.

The square root of 1972856 is about 1404.5839241569. The cubic root of 1972856 is about 125.4195184590.

The spelling of 1972856 in words is "one million, nine hundred seventy-two thousand, eight hundred fifty-six".