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48686890 = 2572671483
BaseRepresentation
bin1011100110111…
…0011100101010
310101121112212011
42321232130222
544430440030
64455310134
71130555200
oct271563452
9111545764
1048686890
11255341aa
121437b34a
13a118815
146675070
15441ab2a
hex2e6e72a

48686890 has 48 divisors (see below), whose sum is σ = 103535712. Its totient is φ = 16432416.

The previous prime is 48686881. The next prime is 48686893. The reversal of 48686890 is 9868684.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (48686893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32089 + ... + 33571.

It is an arithmetic number, because the mean of its divisors is an integer number (2156994).

Almost surely, 248686890 is an apocalyptic number.

48686890 is an abundant number, since it is smaller than the sum of its proper divisors (54848822).

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

48686890 is a wasteful number, since it uses less digits than its factorization.

48686890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571 (or 1564 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 49.

The square root of 48686890 is about 6977.5991573033. The cubic root of 48686890 is about 365.1494727768.

The spelling of 48686890 in words is "forty-eight million, six hundred eighty-six thousand, eight hundred ninety".

Divisors: 1 2 5 7 10 14 35 49 67 70 98 134 245 335 469 490 670 938 1483 2345 2966 3283 4690 6566 7415 10381 14830 16415 20762 32830 51905 72667 99361 103810 145334 198722 363335 496805 695527 726670 993610 1391054 3477635 4868689 6955270 9737378 24343445 48686890