7892281 has 4 divisors (see below), whose sum is σ = 7949200. Its totient is φ = 7835364.

The previous prime is 7892279. The next prime is 7892293. The reversal of 7892281 is 1822987.

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: 1822987 = 89 ⋅20483.

It is a cyclic number.

It is not a de Polignac number, because 7892281 - 2¹ = 7892279 is a prime.

It is a super-2 number, since 2×7892281² = 124576198765922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7892281.

It is not an unprimeable number, because it can be changed into a prime (7892251) 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, 28251 + ... + 28528.

It is an arithmetic number, because the mean of its divisors is an integer number (1987300).

Almost surely, 2^7892281 is an apocalyptic number.

It is an amenable number.

7892281 is a deficient number, since it is larger than the sum of its proper divisors (56919).

7892281 is a wasteful number, since it uses less digits than its factorization.

7892281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56918.

The product of its digits is 16128, while the sum is 37.

The square root of 7892281 is about 2809.3203804479. The cubic root of 7892281 is about 199.0982823025.

It can be divided in two parts, 78922 and 81, that added together give a triangular number (79003 = T₃₉₇).

The spelling of 7892281 in words is "seven million, eight hundred ninety-two thousand, two hundred eighty-one".