1978592 has 72 divisors (see below), whose sum is σ = 4960368. Its totient is φ = 760320.

The previous prime is 1978591. The next prime is 1978597. The reversal of 1978592 is 2958791.

Its product of digits (45360) is a multiple of the sum of its prime factors (112).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1978591) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27068 + ... + 27140.

It is an arithmetic number, because the mean of its divisors is an integer number (68894).

2^1978592 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 1978592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2480184).

1978592 is an abundant number, since it is smaller than the sum of its proper divisors (2981776).

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

1978592 is a wasteful number, since it uses less digits than its factorization.

1978592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 93 counting only the distinct ones).

The product of its digits is 45360, while the sum is 41.

The square root of 1978592 is about 1406.6243279568. The cubic root of 1978592 is about 125.5409515940.

The spelling of 1978592 in words is "one million, nine hundred seventy-eight thousand, five hundred ninety-two".