7872331 has 4 divisors (see below), whose sum is σ = 7884000. Its totient is φ = 7860664.

The previous prime is 7872329. The next prime is 7872341. The reversal of 7872331 is 1332787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1332787 = 41 ⋅32507.

It is a cyclic number.

It is not a de Polignac number, because 7872331 - 2¹ = 7872329 is a prime.

It is a super-2 number, since 2×7872331² = 123947190747122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7872293 and 7872302.

It is not an unprimeable number, because it can be changed into a prime (7872341) 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 3 ways as a sum of consecutive naturals, for example, 4756 + ... + 6193.

It is an arithmetic number, because the mean of its divisors is an integer number (1971000).

Almost surely, 2^7872331 is an apocalyptic number.

7872331 is a deficient number, since it is larger than the sum of its proper divisors (11669).

7872331 is a wasteful number, since it uses less digits than its factorization.

7872331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11668.

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

The square root of 7872331 is about 2805.7674529440. The cubic root of 7872331 is about 198.9303814452.

The spelling of 7872331 in words is "seven million, eight hundred seventy-two thousand, three hundred thirty-one".