2180630 has 32 divisors (see below), whose sum is σ = 4320000. Its totient is φ = 788832.

The previous prime is 2180627. The next prime is 2180677. The reversal of 2180630 is 360812.

2180630 = T₁₆₅ + T₁₆₆ + ... + T₂₅₉.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4121 + ... + 4619.

It is an arithmetic number, because the mean of its divisors is an integer number (135000).

2^2180630 is an apocalyptic number.

2180630 is a deficient number, since it is larger than the sum of its proper divisors (2139370).

2180630 is a wasteful number, since it uses less digits than its factorization.

2180630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2180630 is about 1476.6956355323. The cubic root of 2180630 is about 129.6763150464.

The spelling of 2180630 in words is "two million, one hundred eighty thousand, six hundred thirty".