8722100 has 18 divisors (see below), whose sum is σ = 18927174. Its totient is φ = 3488800.

The previous prime is 8722099. The next prime is 8722117. The reversal of 8722100 is 12278.

It can be written as a sum of positive squares in 3 ways, for example, as 2748964 + 5973136 = 1658^2 + 2444^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43511 + ... + 43710.

Almost surely, 2^8722100 is an apocalyptic number.

It is an amenable number.

8722100 is an abundant number, since it is smaller than the sum of its proper divisors (10205074).

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

8722100 is a wasteful number, since it uses less digits than its factorization.

8722100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87235 (or 87228 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 8722100 is about 2953.3201655086. The cubic root of 8722100 is about 205.8450149176.

Adding to 8722100 its reverse (12278), we get a palindrome (8734378).

The spelling of 8722100 in words is "eight million, seven hundred twenty-two thousand, one hundred".