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80070705 = 325111323541
BaseRepresentation
bin1001100010111…
…00100000110001
312120200000100200
410301130200301
5130444230310
611540105413
71661406201
oct461344061
9176600320
1080070705
114121a340
1222995269
1313786620
14a8c4401
1570699c0
hex4c5c831

80070705 has 96 divisors (see below), whose sum is σ = 170456832. Its totient is φ = 34214400.

The previous prime is 80070703. The next prime is 80070709. The reversal of 80070705 is 50707008.

It is not a de Polignac number, because 80070705 - 21 = 80070703 is a prime.

It is a super-2 number, since 2×800707052 = 12822635598394050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80070703) 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 95 ways as a sum of consecutive naturals, for example, 147735 + ... + 148275.

It is an arithmetic number, because the mean of its divisors is an integer number (1775592).

Almost surely, 280070705 is an apocalyptic number.

It is an amenable number.

80070705 is an abundant number, since it is smaller than the sum of its proper divisors (90386127).

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

80070705 is a wasteful number, since it uses less digits than its factorization.

80070705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599 (or 596 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 80070705 is about 8948.2235667198. The cubic root of 80070705 is about 431.0138417147.

The spelling of 80070705 in words is "eighty million, seventy thousand, seven hundred five".

Divisors: 1 3 5 9 11 13 15 23 33 39 45 55 65 69 99 115 117 143 165 195 207 253 299 345 429 495 541 585 715 759 897 1035 1265 1287 1495 1623 2145 2277 2691 2705 3289 3795 4485 4869 5951 6435 7033 8115 9867 11385 12443 13455 16445 17853 21099 24345 29601 29755 35165 37329 49335 53559 62215 63297 77363 89265 105495 111987 136873 148005 161759 186645 232089 267795 316485 386815 410619 485277 559935 684365 696267 808795 1160445 1231857 1455831 1779349 2053095 2426385 3481335 5338047 6159285 7279155 8896745 16014141 26690235 80070705