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488888890 = 257173111321
BaseRepresentation
bin11101001000111…
…101101000111010
31021001221010110221
4131020331220322
52000123421030
6120302330254
715054326020
oct3510755072
91231833427
10488888890
11230a68506
1211788998a
137a394889
1448d02710
152cdc0e7a
hex1d23da3a

488888890 has 64 divisors (see below), whose sum is σ = 1069106688. Its totient is φ = 157132800.

The previous prime is 488888857. The next prime is 488888909. The reversal of 488888890 is 98888884.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 369430 + ... + 370750.

It is an arithmetic number, because the mean of its divisors is an integer number (16704792).

Almost surely, 2488888890 is an apocalyptic number.

488888890 is an abundant number, since it is smaller than the sum of its proper divisors (580217798).

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

488888890 is a wasteful number, since it uses less digits than its factorization.

488888890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663.

The product of its (nonzero) digits is 9437184, while the sum is 61.

The square root of 488888890 is about 22110.8319608286. The cubic root of 488888890 is about 787.7771675751. Note that the first 3 decimals are identical.

The spelling of 488888890 in words is "four hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred ninety".

Divisors: 1 2 5 7 10 14 17 34 35 70 85 119 170 238 311 595 622 1190 1321 1555 2177 2642 3110 4354 5287 6605 9247 10574 10885 13210 18494 21770 22457 26435 37009 44914 46235 52870 74018 92470 112285 157199 185045 224570 314398 370090 410831 785995 821662 1571990 2054155 2875817 4108310 5751634 6984127 13968254 14379085 28758170 34920635 48888889 69841270 97777778 244444445 488888890