2157792 has 144 divisors (see below), whose sum is σ = 7378560. Its totient is φ = 539136.

The previous prime is 2157787. The next prime is 2157797. The reversal of 2157792 is 2977512.

It is an interprime number because it is at equal distance from previous prime (2157787) and next prime (2157797).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157797) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113559 + ... + 113577.

It is an arithmetic number, because the mean of its divisors is an integer number (51240).

2^2157792 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 2157792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3689280).

2157792 is an abundant number, since it is smaller than the sum of its proper divisors (5220768).

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

2157792 is a wasteful number, since it uses less digits than its factorization.

2157792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65 (or 44 counting only the distinct ones).

The product of its digits is 8820, while the sum is 33.

The square root of 2157792 is about 1468.9424767499. The cubic root of 2157792 is about 129.2220201647. Note that the first 3 decimals are identical.

Adding to 2157792 its product of digits (8820), we get a palindrome (2166612).

The spelling of 2157792 in words is "two million, one hundred fifty-seven thousand, seven hundred ninety-two".