872403 has 8 divisors (see below), whose sum is σ = 1329408. Its totient is φ = 498504.

The previous prime is 872393. The next prime is 872411. The reversal of 872403 is 304278.

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

It is not a de Polignac number, because 872403 - 2⁴ = 872387 is a prime.

It is a super-2 number, since 2×872403² = 1522173988818, which contains 22 as substring.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 872403.

It is not an unprimeable number, because it can be changed into a prime (872453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20751 + ... + 20792.

It is an arithmetic number, because the mean of its divisors is an integer number (166176).

2⁸⁷²⁴⁰³ is an apocalyptic number.

872403 is a deficient number, since it is larger than the sum of its proper divisors (457005).

872403 is a wasteful number, since it uses less digits than its factorization.

872403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41553.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 872403 is about 934.0251602607. The cubic root of 872403 is about 95.5518390378.

It can be divided in two parts, 872 and 403, that added together give a triangular number (1275 = T₅₀).

The spelling of 872403 in words is "eight hundred seventy-two thousand, four hundred three".