2178996 has 36 divisors (see below), whose sum is σ = 5376672. Its totient is φ = 686736.

The previous prime is 2178991. The next prime is 2179007. The reversal of 2178996 is 6998712.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 7⁴ + 8⁵ + 9 + 9 + 6⁶ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2178991) 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, 4081 + ... + 4583.

It is an arithmetic number, because the mean of its divisors is an integer number (149352).

2^2178996 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 2178996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2688336).

2178996 is an abundant number, since it is smaller than the sum of its proper divisors (3197676).

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

2178996 is a wasteful number, since it uses less digits than its factorization.

2178996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 527 counting only the distinct ones).

The product of its digits is 54432, while the sum is 42.

The square root of 2178996 is about 1476.1422695662. The cubic root of 2178996 is about 129.6439170627.

The spelling of 2178996 in words is "two million, one hundred seventy-eight thousand, nine hundred ninety-six".