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4969809920 = 21151728549
BaseRepresentation
bin1001010000011100…
…10100100000000000
3110211100120111120002
410220032110200000
540134232404140
62141052135132
7234104454515
oct45016244000
913740514502
104969809920
112120367829
12b684674a8
1361281b23a
1435208330c
151e1491415
hex128394800

4969809920 has 96 divisors (see below), whose sum is σ = 12626523000. Its totient is φ = 1870921728.

The previous prime is 4969809913. The next prime is 4969809959. The reversal of 4969809920 is 299089694.

It can be written as a sum of positive squares in 4 ways, for example, as 3889767424 + 1080042496 = 62368^2 + 32864^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159806 + ... + 188354.

Almost surely, 24969809920 is an apocalyptic number.

4969809920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4969809920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6313261500).

4969809920 is an abundant number, since it is smaller than the sum of its proper divisors (7656713080).

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

4969809920 is a wasteful number, since it uses less digits than its factorization.

4969809920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28593 (or 28573 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 56.

The square root of 4969809920 is about 70496.8787961566. The cubic root of 4969809920 is about 1706.5273757848.

The spelling of 4969809920 in words is "four billion, nine hundred sixty-nine million, eight hundred nine thousand, nine hundred twenty".

Divisors: 1 2 4 5 8 10 16 17 20 32 34 40 64 68 80 85 128 136 160 170 256 272 320 340 512 544 640 680 1024 1088 1280 1360 2048 2176 2560 2720 4352 5120 5440 8704 10240 10880 17408 21760 28549 34816 43520 57098 87040 114196 142745 174080 228392 285490 456784 485333 570980 913568 970666 1141960 1827136 1941332 2283920 2426665 3654272 3882664 4567840 4853330 7308544 7765328 9135680 9706660 14617088 15530656 18271360 19413320 29234176 31061312 36542720 38826640 58468352 62122624 73085440 77653280 124245248 146170880 155306560 248490496 292341760 310613120 496980992 621226240 993961984 1242452480 2484904960 4969809920