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7999968 = 253167499
BaseRepresentation
bin11110100001000111100000
3120001102220010
4132201013200
54021444333
6443244520
7124666344
oct36410740
916042803
107999968
114574549
122819740
131871412
1410c3624
15a80563
hex7a11e0

7999968 has 48 divisors (see below), whose sum is σ = 21168000. Its totient is φ = 2645376.

The previous prime is 7999963. The next prime is 7999993. The reversal of 7999968 is 8699997.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7999963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15783 + ... + 16281.

It is an arithmetic number, because the mean of its divisors is an integer number (441000).

Almost surely, 27999968 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 7999968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10584000).

7999968 is an abundant number, since it is smaller than the sum of its proper divisors (13168032).

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

7999968 is a wasteful number, since it uses less digits than its factorization.

7999968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 671 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 57.

The square root of 7999968 is about 2828.4214678863. The cubic root of 7999968 is about 199.9997333330. Note that the first 3 decimals are identical.

The spelling of 7999968 in words is "seven million, nine hundred ninety-nine thousand, nine hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 167 334 499 501 668 998 1002 1336 1497 1996 2004 2672 2994 3992 4008 5344 5988 7984 8016 11976 15968 16032 23952 47904 83333 166666 249999 333332 499998 666664 999996 1333328 1999992 2666656 3999984 7999968