2187436 has 6 divisors (see below), whose sum is σ = 3828020. Its totient is φ = 1093716.

The previous prime is 2187421. The next prime is 2187457. The reversal of 2187436 is 6347812.

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 = 2187398 and 2187407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273426 + ... + 273433.

2^2187436 is an apocalyptic number.

It is an amenable number.

2187436 is a deficient number, since it is larger than the sum of its proper divisors (1640584).

2187436 is a wasteful number, since it uses less digits than its factorization.

2187436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546863 (or 546861 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 2187436 is about 1478.9983096677. The cubic root of 2187436 is about 129.8110865544.

The spelling of 2187436 in words is "two million, one hundred eighty-seven thousand, four hundred thirty-six".