2187456 has 28 divisors (see below), whose sum is σ = 5788152. Its totient is φ = 729088.

The previous prime is 2187421. The next prime is 2187457. The reversal of 2187456 is 6547812.

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

It is not an unprimeable number, because it can be changed into a prime (2187457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5505 + ... + 5888.

2^2187456 is an apocalyptic number.

It is an amenable number.

2187456 is an abundant number, since it is smaller than the sum of its proper divisors (3600696).

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

2187456 is a wasteful number, since it uses less digits than its factorization.

2187456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11408 (or 11398 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 2187456 is about 1479.0050709852. The cubic root of 2187456 is about 129.8114821795.

The spelling of 2187456 in words is "two million, one hundred eighty-seven thousand, four hundred fifty-six".