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8979388488 = 233574311531
BaseRepresentation
bin10000101110011011…
…01001100001001000
3212011210022012100000
420113031221201020
5121342210412423
64043003243000
7435342354120
oct102715514110
925153265300
108979388488
1138986a3524
1218a7219460
13b01414735
146127abc80
153784a9843
hex217369848

8979388488 has 192 divisors, whose sum is σ = 28908472320. Its totient is φ = 2557915200.

The previous prime is 8979388477. The next prime is 8979388489. The reversal of 8979388488 is 8848839798.

It is a happy number.

It is a super-2 number, since 2×89793884882 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (8979388489) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5864283 + ... + 5865813.

It is an arithmetic number, because the mean of its divisors is an integer number (150564960).

Almost surely, 28979388488 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 8979388488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14454236160).

8979388488 is an abundant number, since it is smaller than the sum of its proper divisors (19929083832).

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

8979388488 is a wasteful number, since it uses less digits than its factorization.

8979388488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990 (or 1974 counting only the distinct ones).

The product of its digits is 222953472, while the sum is 72.

The square root of 8979388488 is about 94759.6353306618. The cubic root of 8979388488 is about 2078.4946955078.

The spelling of 8979388488 in words is "eight billion, nine hundred seventy-nine million, three hundred eighty-eight thousand, four hundred eighty-eight".