2195830 has 64 divisors (see below), whose sum is σ = 5160960. Its totient is φ = 653184.

The previous prime is 2195827. The next prime is 2195861. The reversal of 2195830 is 385912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17227 + ... + 17353.

It is an arithmetic number, because the mean of its divisors is an integer number (80640).

2^2195830 is an apocalyptic number.

2195830 is an abundant number, since it is smaller than the sum of its proper divisors (2965130).

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

2195830 is a wasteful number, since it uses less digits than its factorization.

2195830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2195830 is about 1481.8333239606. The cubic root of 2195830 is about 129.9769189792.

It can be divided in two parts, 2195 and 830, that added together give a square (3025 = 55²).

The spelling of 2195830 in words is "two million, one hundred ninety-five thousand, eight hundred thirty".