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123828968 = 2315478621
BaseRepresentation
bin1110110000101…
…11101011101000
322122000011102002
413120113223220
5223200011333
620142030132
73032346254
oct730275350
9278004362
10123828968
116399759a
1235578348
131c8679a3
1412635264
15ad100e8
hex7617ae8

123828968 has 8 divisors (see below), whose sum is σ = 232179330. Its totient is φ = 61914480.

The previous prime is 123828961. The next prime is 123828989. The reversal of 123828968 is 869828321.

It can be written as a sum of positive squares in only one way, i.e., 123254404 + 574564 = 11102^2 + 758^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1238289682 = 30667226631890048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123828961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7739303 + ... + 7739318.

Almost surely, 2123828968 is an apocalyptic number.

It is an amenable number.

123828968 is a deficient number, since it is larger than the sum of its proper divisors (108350362).

123828968 is a wasteful number, since it uses less digits than its factorization.

123828968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15478627 (or 15478623 counting only the distinct ones).

The product of its digits is 331776, while the sum is 47.

The square root of 123828968 is about 11127.8465122413. The cubic root of 123828968 is about 498.4337226739.

The spelling of 123828968 in words is "one hundred twenty-three million, eight hundred twenty-eight thousand, nine hundred sixty-eight".

Divisors: 1 2 4 8 15478621 30957242 61914484 123828968