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290468990880 = 253252323671039
BaseRepresentation
bin1000011101000010100…
…11010000111110100000
31000202202021122121011100
410032201103100332200
514224340030202010
6341234542314400
726662043453625
oct4164123207640
91022667577140
10290468990880
1110220719a062
1248365588a00
132151135a143
14100b73c234c
157850a912c0
hex43a14d0fa0

290468990880 has 432 divisors, whose sum is σ = 1040019402240. Its totient is φ = 73817644032.

The previous prime is 290468990849. The next prime is 290468990881. The reversal of 290468990880 is 88099864092.

290468990880 is a `hidden beast` number, since 2 + 9 + 0 + 468 + 9 + 90 + 8 + 80 = 666.

It is not an unprimeable number, because it can be changed into a prime (290468990881) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 279565401 + ... + 279566439.

It is an arithmetic number, because the mean of its divisors is an integer number (2407452320).

Almost surely, 2290468990880 is an apocalyptic number.

290468990880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290468990880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520009701120).

290468990880 is an abundant number, since it is smaller than the sum of its proper divisors (749550411360).

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

290468990880 is a wasteful number, since it uses less digits than its factorization.

290468990880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473 (or 1439 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 63.

The spelling of 290468990880 in words is "two hundred ninety billion, four hundred sixty-eight million, nine hundred ninety thousand, eight hundred eighty".