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2390988208 = 247612691301
BaseRepresentation
bin1000111010000011…
…1001010110110000
320011122001210012211
42032200321112300
514344043110313
61033131101504
7113152031050
oct21640712660
96148053184
102390988208
111017717914
125688a1894
132c1481b2b
14189795560
15ded95e3d
hex8e8395b0

2390988208 has 80 divisors (see below), whose sum is σ = 5405279040. Its totient is φ = 1003392000.

The previous prime is 2390988203. The next prime is 2390988217. The reversal of 2390988208 is 8028890932.

It is a super-2 number, since 2×23909882082 = 11433649221590102528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2390988203) 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, 1837158 + ... + 1838458.

It is an arithmetic number, because the mean of its divisors is an integer number (67565988).

Almost surely, 22390988208 is an apocalyptic number.

2390988208 is a gapful number since it is divisible by the number (28) 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 2390988208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2702639520).

2390988208 is an abundant number, since it is smaller than the sum of its proper divisors (3014290832).

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

2390988208 is a wasteful number, since it uses less digits than its factorization.

2390988208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646 (or 1640 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 2390988208 is about 48897.7321355500. The cubic root of 2390988208 is about 1337.1880231744.

The spelling of 2390988208 in words is "two billion, three hundred ninety million, nine hundred eighty-eight thousand, two hundred eight".

Divisors: 1 2 4 7 8 14 16 28 56 61 112 122 244 269 427 488 538 854 976 1076 1301 1708 1883 2152 2602 3416 3766 4304 5204 6832 7532 9107 10408 15064 16409 18214 20816 30128 32818 36428 65636 72856 79361 114863 131272 145712 158722 229726 262544 317444 349969 459452 555527 634888 699938 918904 1111054 1269776 1399876 1837808 2222108 2449783 2799752 4444216 4899566 5599504 8888432 9799132 19598264 21348109 39196528 42696218 85392436 149436763 170784872 298873526 341569744 597747052 1195494104 2390988208