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7679990904 = 2332367720551
BaseRepresentation
bin1110010011100001…
…10101110001111000
3201211020020221221120
413021300311301320
5111212034202104
63310024505240
7361213563015
oct71160656170
921736227846
107679990904
113291177923
1215a401b220
1395515aa21
1452bda670c
152ee387cd9
hex1c9c35c78

7679990904 has 64 divisors (see below), whose sum is σ = 20065328640. Its totient is φ = 2444956800.

The previous prime is 7679990831. The next prime is 7679990921. The reversal of 7679990904 is 4090999767.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363429 + ... + 383979.

It is an arithmetic number, because the mean of its divisors is an integer number (313520760).

Almost surely, 27679990904 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 7679990904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10032664320).

7679990904 is an abundant number, since it is smaller than the sum of its proper divisors (12385337736).

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

7679990904 is a wasteful number, since it uses less digits than its factorization.

7679990904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21260 (or 21256 counting only the distinct ones).

The product of its (nonzero) digits is 7715736, while the sum is 60.

The square root of 7679990904 is about 87635.5573040989. The cubic root of 7679990904 is about 1972.9688805521.

The spelling of 7679990904 in words is "seven billion, six hundred seventy-nine million, nine hundred ninety thousand, nine hundred four".

Divisors: 1 2 3 4 6 8 12 23 24 46 69 92 138 184 276 552 677 1354 2031 2708 4062 5416 8124 15571 16248 20551 31142 41102 46713 61653 62284 82204 93426 123306 124568 164408 186852 246612 373704 472673 493224 945346 1418019 1890692 2836038 3781384 5672076 11344152 13913027 27826054 41739081 55652108 83478162 111304216 166956324 319999621 333912648 639999242 959998863 1279998484 1919997726 2559996968 3839995452 7679990904