2189836 has 24 divisors (see below), whose sum is σ = 4220496. Its totient is φ = 985920.

The previous prime is 2189813. The next prime is 2189843. The reversal of 2189836 is 6389812.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2189795 and 2189804.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6750 + ... + 7066.

It is an arithmetic number, because the mean of its divisors is an integer number (175854).

2^2189836 is an apocalyptic number.

It is an amenable number.

2189836 is a deficient number, since it is larger than the sum of its proper divisors (2030660).

2189836 is a wasteful number, since it uses less digits than its factorization.

2189836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 487 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 2189836 is about 1479.8094471924. The cubic root of 2189836 is about 129.8585443599.

It can be divided in two parts, 2189 and 836, that added together give a square (3025 = 55²).

The spelling of 2189836 in words is "two million, one hundred eighty-nine thousand, eight hundred thirty-six".