8420972976 has 160 divisors (see below), whose sum is σ = 27401024000. Its totient is φ = 2454665472.

The previous prime is 8420972947. The next prime is 8420972977. The reversal of 8420972976 is 6792790248.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (8420972977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67245 + ... + 146163.

It is an arithmetic number, because the mean of its divisors is an integer number (171256400).

Almost surely, 2^8420972976 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 8420972976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13700512000).

8420972976 is an abundant number, since it is smaller than the sum of its proper divisors (18980051024).

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

8420972976 is a wasteful number, since it uses less digits than its factorization.

8420972976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78968 (or 78956 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The square root of 8420972976 is about 91765.8595339247. The cubic root of 8420972976 is about 2034.4831215487.

The spelling of 8420972976 in words is "eight billion, four hundred twenty million, nine hundred seventy-two thousand, nine hundred seventy-six".