2158224 has 20 divisors (see below), whose sum is σ = 5575536. Its totient is φ = 719392.

The previous prime is 2158223. The next prime is 2158231. The reversal of 2158224 is 4228512.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 2158194 and 2158203.

It is not an unprimeable number, because it can be changed into a prime (2158223) 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, 22434 + ... + 22529.

2^2158224 is an apocalyptic number.

2158224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2158224 is an abundant number, since it is smaller than the sum of its proper divisors (3417312).

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

2158224 is a wasteful number, since it uses less digits than its factorization.

2158224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44974 (or 44968 counting only the distinct ones).

The product of its digits is 1280, while the sum is 24.

The square root of 2158224 is about 1469.0895139507. The cubic root of 2158224 is about 129.2306432059.

The spelling of 2158224 in words is "two million, one hundred fifty-eight thousand, two hundred twenty-four".