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272817040 = 2458938317
BaseRepresentation
bin10000010000101…
…101101110010000
3201000100112121211
4100100231232100
51024320121130
643023225504
76521622646
oct2020555620
9630315554
10272817040
1112aaa8531
1277448294
13446a1102
1428339196
1518e3ea2a
hex1042db90

272817040 has 40 divisors (see below), whose sum is σ = 641443320. Its totient is φ = 107897856.

The previous prime is 272817031. The next prime is 272817047. The reversal of 272817040 is 40718272.

It can be written as a sum of positive squares in 4 ways, for example, as 14379264 + 258437776 = 3792^2 + 16076^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 272816993 and 272817011.

It is not an unprimeable number, because it can be changed into a prime (272817047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12039 + ... + 26278.

It is an arithmetic number, because the mean of its divisors is an integer number (16036083).

Almost surely, 2272817040 is an apocalyptic number.

272817040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

272817040 is an abundant number, since it is smaller than the sum of its proper divisors (368626280).

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

272817040 is a wasteful number, since it uses less digits than its factorization.

272817040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38419 (or 38413 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 272817040 is about 16517.1740924409. The cubic root of 272817040 is about 648.5704599060.

The spelling of 272817040 in words is "two hundred seventy-two million, eight hundred seventeen thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 89 178 356 445 712 890 1424 1780 3560 7120 38317 76634 153268 191585 306536 383170 613072 766340 1532680 3065360 3410213 6820426 13640852 17051065 27281704 34102130 54563408 68204260 136408520 272817040