7728263 has 4 divisors (see below), whose sum is σ = 7748520. Its totient is φ = 7708008.

The previous prime is 7728221. The next prime is 7728271. The reversal of 7728263 is 3628277.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3628277 = 29 ⋅125113.

It is a cyclic number.

It is not a de Polignac number, because 7728263 - 2⁶ = 7728199 is a prime.

It is a super-6 number, since 6×7728263⁶ (a number of 43 digits) contains 666666 as substring.

It is a d-powerful number, because it can be written as 7⁵ + 7⁷ + 2³ + 8 + 2²¹ + 6⁵ + 3¹⁴ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7728293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9545 + ... + 10322.

It is an arithmetic number, because the mean of its divisors is an integer number (1937130).

Almost surely, 2^7728263 is an apocalyptic number.

7728263 is a deficient number, since it is larger than the sum of its proper divisors (20257).

7728263 is a wasteful number, since it uses less digits than its factorization.

7728263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20256.

The product of its digits is 28224, while the sum is 35.

The square root of 7728263 is about 2779.9753596030. The cubic root of 7728263 is about 197.7093907000.

The spelling of 7728263 in words is "seven million, seven hundred twenty-eight thousand, two hundred sixty-three".