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688376948 = 227316113001
BaseRepresentation
bin101001000001111…
…100110001110100
31202222022011122112
4221001330301310
52402211030243
6152150150152
723026051610
oct5101746164
91688264575
10688376948
11323630876
12172652358
13ac7ccb4c
14675d0340
1540678818
hex2907cc74

688376948 has 48 divisors (see below), whose sum is σ = 1444574208. Its totient is φ = 280800000.

The previous prime is 688376947. The next prime is 688376963. The reversal of 688376948 is 849673886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688376947) 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, 46448 + ... + 59448.

It is an arithmetic number, because the mean of its divisors is an integer number (30095296).

Almost surely, 2688376948 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 688376948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722287104).

688376948 is an abundant number, since it is smaller than the sum of its proper divisors (756197260).

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

688376948 is a wasteful number, since it uses less digits than its factorization.

688376948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13104 (or 13102 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 59.

The square root of 688376948 is about 26236.9386171482. The cubic root of 688376948 is about 882.9621888611.

The spelling of 688376948 in words is "six hundred eighty-eight million, three hundred seventy-six thousand, nine hundred forty-eight".

Divisors: 1 2 4 7 14 28 31 61 62 122 124 217 244 427 434 854 868 1708 1891 3782 7564 13001 13237 26002 26474 52004 52948 91007 182014 364028 403031 793061 806062 1586122 1612124 2821217 3172244 5551427 5642434 11102854 11284868 22205708 24584891 49169782 98339564 172094237 344188474 688376948