8762732121 has 16 divisors (see below), whose sum is σ = 13726238400. Its totient is φ = 4902227520.

The previous prime is 8762732117. The next prime is 8762732129. The reversal of 8762732121 is 1212372678.

8762732121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8762732121 - 2² = 8762732117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 8762732121.

It is not an unprimeable number, because it can be changed into a prime (8762732129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10212546 + ... + 10213403.

It is an arithmetic number, because the mean of its divisors is an integer number (857889900).

Almost surely, 2^8762732121 is an apocalyptic number.

It is an amenable number.

8762732121 is a deficient number, since it is larger than the sum of its proper divisors (4963506279).

8762732121 is a wasteful number, since it uses less digits than its factorization.

8762732121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20425976.

The product of its digits is 56448, while the sum is 39.

The square root of 8762732121 is about 93609.4659796754. The cubic root of 8762732121 is about 2061.6416455741.

The spelling of 8762732121 in words is "eight billion, seven hundred sixty-two million, seven hundred thirty-two thousand, one hundred twenty-one".