2187798 has 32 divisors (see below), whose sum is σ = 4704480. Its totient is φ = 675840.

The previous prime is 2187791. The next prime is 2187811. The reversal of 2187798 is 8977812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8958 + ... + 9198.

It is an arithmetic number, because the mean of its divisors is an integer number (147015).

2^2187798 is an apocalyptic number.

2187798 is an abundant number, since it is smaller than the sum of its proper divisors (2516682).

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

2187798 is a wasteful number, since it uses less digits than its factorization.

2187798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352.

The product of its digits is 56448, while the sum is 42.

The square root of 2187798 is about 1479.1206847313. The cubic root of 2187798 is about 129.8182469957.

The spelling of 2187798 in words is "two million, one hundred eighty-seven thousand, seven hundred ninety-eight".