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8457888980 = 2251163336353
BaseRepresentation
bin1111110000010000…
…10010010011010100
3210211110000021111102
413320020102103110
5114310204421410
63515133525232
7416410604312
oct77010222324
923743007442
108457888980
1136502921a2
121780643818
13a4a372848
145a341b0b2
153477e62a5
hex1f82124d4

8457888980 has 24 divisors (see below), whose sum is σ = 17763582312. Its totient is φ = 3382771712.

The previous prime is 8457888979. The next prime is 8457889003. The reversal of 8457888980 is 898887548.

It can be written as a sum of positive squares in 4 ways, for example, as 750102544 + 7707786436 = 27388^2 + 87794^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214484 + ... + 250836.

It is an arithmetic number, because the mean of its divisors is an integer number (740149263).

Almost surely, 28457888980 is an apocalyptic number.

It is an amenable number.

8457888980 is an abundant number, since it is smaller than the sum of its proper divisors (9305693332).

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

8457888980 is a wasteful number, since it uses less digits than its factorization.

8457888980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47995 (or 47993 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 65.

The square root of 8457888980 is about 91966.7819378280. The cubic root of 8457888980 is about 2037.4517216909.

The spelling of 8457888980 in words is "eight billion, four hundred fifty-seven million, eight hundred eighty-eight thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 11633 23266 36353 46532 58165 72706 116330 145412 181765 232660 363530 727060 422894449 845788898 1691577796 2114472245 4228944490 8457888980