1872223 has 4 divisors (see below), whose sum is σ = 1953648. Its totient is φ = 1790800.

The previous prime is 1872217. The next prime is 1872229. The reversal of 1872223 is 3222781.

1872223 = T₂₆₂ + T₂₆₃ + ... + T₃₀₇.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1872217) and next prime (1872229).

It is a cyclic number.

It is not a de Polignac number, because 1872223 - 2⁹ = 1871711 is a prime.

It is a d-powerful number, because it can be written as 1 + 8 + 7⁷ + 2² + 2⁶ + 2²⁰ + 3³ .

It is a Duffinian number.

1872223 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872229) 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, 40678 + ... + 40723.

It is an arithmetic number, because the mean of its divisors is an integer number (488412).

2^1872223 is an apocalyptic number.

1872223 is a deficient number, since it is larger than the sum of its proper divisors (81425).

1872223 is an equidigital number, since it uses as much as digits as its factorization.

1872223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81424.

The product of its digits is 1344, while the sum is 25.

The square root of 1872223 is about 1368.2920009998. The cubic root of 1872223 is about 123.2496965625.

The spelling of 1872223 in words is "one million, eight hundred seventy-two thousand, two hundred twenty-three".