1872213 has 8 divisors (see below), whose sum is σ = 2852928. Its totient is φ = 1069824.

The previous prime is 1872173. The next prime is 1872217. The reversal of 1872213 is 3122781.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1872213 - 2⁶ = 1872149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872217) 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, 44556 + ... + 44597.

It is an arithmetic number, because the mean of its divisors is an integer number (356616).

2^1872213 is an apocalyptic number.

It is an amenable number.

1872213 is a deficient number, since it is larger than the sum of its proper divisors (980715).

1872213 is an equidigital number, since it uses as much as digits as its factorization.

1872213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89163.

The product of its digits is 672, while the sum is 24.

The square root of 1872213 is about 1368.2883468041. The cubic root of 1872213 is about 123.2494771265.

Adding to 1872213 its reverse (3122781), we get a palindrome (4994994).

The spelling of 1872213 in words is "one million, eight hundred seventy-two thousand, two hundred thirteen".