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20223000240 = 2435233663587
BaseRepresentation
bin10010110101011000…
…100111111010110000
31221012101010212001220
4102311120213322300
5312404042001430
613142413025040
71314100444242
oct226530477260
957171125056
1020223000240
1186383a1443
123b04785180
131ba3955b41
14d9bb74092
157d561a110
hex4b5627eb0

20223000240 has 80 divisors (see below), whose sum is σ = 65417027328. Its totient is φ = 5158329088.

The previous prime is 20223000211. The next prime is 20223000251. The reversal of 20223000240 is 4200032202.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1826274 + ... + 1837313.

Almost surely, 220223000240 is an apocalyptic number.

20223000240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20223000240 is an abundant number, since it is smaller than the sum of its proper divisors (45194027088).

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

20223000240 is a wasteful number, since it uses less digits than its factorization.

20223000240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3663626 (or 3663620 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

Adding to 20223000240 its reverse (4200032202), we get a palindrome (24423032442).

The spelling of 20223000240 in words is "twenty billion, two hundred twenty-three million, two hundred forty", and thus it is an aban number.

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 23 24 30 40 46 48 60 69 80 92 115 120 138 184 230 240 276 345 368 460 552 690 920 1104 1380 1840 2760 5520 3663587 7327174 10990761 14654348 18317935 21981522 29308696 36635870 43963044 54953805 58617392 73271740 84262501 87926088 109907610 146543480 168525002 175852176 219815220 252787503 293086960 337050004 421312505 439630440 505575006 674100008 842625010 879260880 1011150012 1263937515 1348200016 1685250020 2022300024 2527875030 3370500040 4044600048 5055750060 6741000080 10111500120 20223000240