1972784 has 30 divisors (see below), whose sum is σ = 4205460. Its totient is φ = 895840.

The previous prime is 1972781. The next prime is 1972787. The reversal of 1972784 is 4872791.

It is an interprime number because it is at equal distance from previous prime (1972781) and next prime (1972787).

It is not an unprimeable number, because it can be changed into a prime (1972781) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1427 + ... + 2445.

It is an arithmetic number, because the mean of its divisors is an integer number (140182).

2^1972784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1972784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2102730).

1972784 is an abundant number, since it is smaller than the sum of its proper divisors (2232676).

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

1972784 is a wasteful number, since it uses less digits than its factorization.

1972784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049 (or 1032 counting only the distinct ones).

The product of its digits is 28224, while the sum is 38.

The square root of 1972784 is about 1404.5582935571. The cubic root of 1972784 is about 125.4179926988.

The spelling of 1972784 in words is "one million, nine hundred seventy-two thousand, seven hundred eighty-four".