7872133 has 4 divisors (see below), whose sum is σ = 7907040. Its totient is φ = 7837228.

The previous prime is 7872131. The next prime is 7872149. The reversal of 7872133 is 3312787.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3312787 = 139 ⋅23833.

It is a cyclic number.

It is not a de Polignac number, because 7872133 - 2¹ = 7872131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7872095 and 7872104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7872131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17113 + ... + 17566.

It is an arithmetic number, because the mean of its divisors is an integer number (1976760).

Almost surely, 2^7872133 is an apocalyptic number.

It is an amenable number.

7872133 is a deficient number, since it is larger than the sum of its proper divisors (34907).

7872133 is a wasteful number, since it uses less digits than its factorization.

7872133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34906.

The product of its digits is 7056, while the sum is 31.

The square root of 7872133 is about 2805.7321682584. The cubic root of 7872133 is about 198.9287136399.

The spelling of 7872133 in words is "seven million, eight hundred seventy-two thousand, one hundred thirty-three".