8772640 has 24 divisors (see below), whose sum is σ = 20725740. Its totient is φ = 3508992.

The previous prime is 8772619. The next prime is 8772649. The reversal of 8772640 is 462778.

It can be written as a sum of positive squares in 2 ways, for example, as 8271376 + 501264 = 2876^2 + 708^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8772596 and 8772605.

It is not an unprimeable number, because it can be changed into a prime (8772649) 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, 27255 + ... + 27574.

Almost surely, 2^8772640 is an apocalyptic number.

8772640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8772640 is an abundant number, since it is smaller than the sum of its proper divisors (11953100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8772640 is a wasteful number, since it uses less digits than its factorization.

8772640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54844 (or 54836 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 8772640 is about 2961.8642777818. The cubic root of 8772640 is about 206.2418374486.

It can be divided in two parts, 87 and 72640, that added together give a palindrome (72727).

The spelling of 8772640 in words is "eight million, seven hundred seventy-two thousand, six hundred forty".