7928266 has 4 divisors (see below), whose sum is σ = 11892402. Its totient is φ = 3964132.

The previous prime is 7928257. The next prime is 7928267. The reversal of 7928266 is 6628297.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7155625 + 772641 = 2675^2 + 879^2 .

It is not an unprimeable number, because it can be changed into a prime (7928267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1982065 + ... + 1982068.

Almost surely, 2^7928266 is an apocalyptic number.

7928266 is a deficient number, since it is larger than the sum of its proper divisors (3964136).

7928266 is a wasteful number, since it uses less digits than its factorization.

7928266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964135.

The product of its digits is 72576, while the sum is 40.

The square root of 7928266 is about 2815.7176705060. The cubic root of 7928266 is about 199.4004209879.

The spelling of 7928266 in words is "seven million, nine hundred twenty-eight thousand, two hundred sixty-six".