1872873 has 12 divisors (see below), whose sum is σ = 2864628. Its totient is φ = 1175040.

The previous prime is 1872859. The next prime is 1872889. The reversal of 1872873 is 3782781.

It can be written as a sum of positive squares in 2 ways, for example, as 974169 + 898704 = 987^2 + 948^2 .

It is not a de Polignac number, because 1872873 - 2⁵ = 1872841 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872173) 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, 5968 + ... + 6273.

It is an arithmetic number, because the mean of its divisors is an integer number (238719).

2^1872873 is an apocalyptic number.

It is an amenable number.

1872873 is a deficient number, since it is larger than the sum of its proper divisors (991755).

1872873 is a wasteful number, since it uses less digits than its factorization.

1872873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12264 (or 12261 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 1872873 is about 1368.5295027876. The cubic root of 1872873 is about 123.2639582242.

The spelling of 1872873 in words is "one million, eight hundred seventy-two thousand, eight hundred seventy-three".