2187423 has 12 divisors (see below), whose sum is σ = 3611088. Its totient is φ = 1249920.

The previous prime is 2187421. The next prime is 2187457. The reversal of 2187423 is 3247812.

It is not a de Polignac number, because 2187423 - 2¹ = 2187421 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17298 + ... + 17423.

It is an arithmetic number, because the mean of its divisors is an integer number (300924).

2^2187423 is an apocalyptic number.

2187423 is a deficient number, since it is larger than the sum of its proper divisors (1423665).

2187423 is a wasteful number, since it uses less digits than its factorization.

2187423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34734 (or 34731 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 2187423 is about 1478.9939147948. The cubic root of 2187423 is about 129.8108293968.

The spelling of 2187423 in words is "two million, one hundred eighty-seven thousand, four hundred twenty-three".