8276721552 has 120 divisors (see below), whose sum is σ = 25316692128. Its totient is φ = 2503372800.

The previous prime is 8276721529. The next prime is 8276721559. The reversal of 8276721552 is 2551276728.

8276721552 is a `hidden beast` number, since 8 + 2 + 76 + 7 + 21 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 8276721498 and 8276721507.

It is not an unprimeable number, because it can be changed into a prime (8276721559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 887152 + ... + 896432.

Almost surely, 2^8276721552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8276721552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12658346064).

8276721552 is an abundant number, since it is smaller than the sum of its proper divisors (17039970576).

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

8276721552 is a wasteful number, since it uses less digits than its factorization.

8276721552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9869 (or 9860 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 8276721552 is about 90976.4890067758. The cubic root of 8276721552 is about 2022.7992390848.

The spelling of 8276721552 in words is "eight billion, two hundred seventy-six million, seven hundred twenty-one thousand, five hundred fifty-two".