2187924 has 24 divisors (see below), whose sum is σ = 5230848. Its totient is φ = 711360.

The previous prime is 2187919. The next prime is 2187929. The reversal of 2187924 is 4297812.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2187919) and next prime (2187929).

It is a super-2 number, since 2×2187924² = 9574022859552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1732 + ... + 2715.

It is an arithmetic number, because the mean of its divisors is an integer number (217952).

2^2187924 is an apocalyptic number.

It is an amenable number.

2187924 is an abundant number, since it is smaller than the sum of its proper divisors (3042924).

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

2187924 is a wasteful number, since it uses less digits than its factorization.

2187924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4495 (or 4493 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 2187924 is about 1479.1632769914. The cubic root of 2187924 is about 129.8207391187.

The spelling of 2187924 in words is "two million, one hundred eighty-seven thousand, nine hundred twenty-four".