1972838 has 24 divisors (see below), whose sum is σ = 3533544. Its totient is φ = 823200.

The previous prime is 1972829. The next prime is 1972847. The reversal of 1972838 is 8382791.

It is an interprime number because it is at equal distance from previous prime (1972829) and next prime (1972847).

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 3773 + ... + 4263.

It is an arithmetic number, because the mean of its divisors is an integer number (147231).

2^1972838 is an apocalyptic number.

1972838 is a deficient number, since it is larger than the sum of its proper divisors (1560706).

1972838 is a wasteful number, since it uses less digits than its factorization.

1972838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 541 counting only the distinct ones).

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

The square root of 1972838 is about 1404.5775165508. The cubic root of 1972838 is about 125.4191370224.

The spelling of 1972838 in words is "one million, nine hundred seventy-two thousand, eight hundred thirty-eight".