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242718720 = 211357901
BaseRepresentation
bin11100111011110…
…01100000000000
3121220201101111020
432131321200000
5444113444340
640030145440
76005034516
oct1635714000
9556641436
10242718720
11115010192
1269352280
133b39345a
14243424b6
15164969d0
hexe779800

242718720 has 96 divisors (see below), whose sum is σ = 776608560. Its totient is φ = 64716800.

The previous prime is 242718713. The next prime is 242718727. The reversal of 242718720 is 27817242.

It is an interprime number because it is at equal distance from previous prime (242718713) and next prime (242718727).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242718727) 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, 26770 + ... + 34670.

Almost surely, 2242718720 is an apocalyptic number.

242718720 is a gapful number since it is divisible by the number (20) 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 242718720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388304280).

242718720 is an abundant number, since it is smaller than the sum of its proper divisors (533889840).

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

242718720 is an equidigital number, since it uses as much as digits as its factorization.

242718720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7931 (or 7911 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 242718720 is about 15579.4325955729. The cubic root of 242718720 is about 623.7842778313.

The spelling of 242718720 in words is "two hundred forty-two million, seven hundred eighteen thousand, seven hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 256 320 384 480 512 640 768 960 1024 1280 1536 1920 2048 2560 3072 3840 5120 6144 7680 7901 10240 15360 15802 23703 30720 31604 39505 47406 63208 79010 94812 118515 126416 158020 189624 237030 252832 316040 379248 474060 505664 632080 758496 948120 1011328 1264160 1516992 1896240 2022656 2528320 3033984 3792480 4045312 5056640 6067968 7584960 8090624 10113280 12135936 15169920 16181248 20226560 24271872 30339840 40453120 48543744 60679680 80906240 121359360 242718720