Search a number
-
+
80849930 = 2571517649
BaseRepresentation
bin1001101000110…
…10110000001010
312122010121020212
410310122300022
5131144144210
612004521122
72001133040
oct464326012
9178117225
1080849930
1141701827
12230b01a2
131399a1c5
14aa48390
157170805
hex4d1ac0a

80849930 has 32 divisors (see below), whose sum is σ = 167443200. Its totient is φ = 27532800.

The previous prime is 80849897. The next prime is 80849981. The reversal of 80849930 is 3994808.

It is a super-2 number, since 2×808499302 = 13073422362009800, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6746 + ... + 14394.

It is an arithmetic number, because the mean of its divisors is an integer number (5232600).

Almost surely, 280849930 is an apocalyptic number.

80849930 is an abundant number, since it is smaller than the sum of its proper divisors (86593270).

80849930 is a wasteful number, since it uses less digits than its factorization.

80849930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7814.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 80849930 is about 8991.6589125700. The cubic root of 80849930 is about 432.4074980094.

The spelling of 80849930 in words is "eighty million, eight hundred forty-nine thousand, nine hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 151 302 755 1057 1510 2114 5285 7649 10570 15298 38245 53543 76490 107086 267715 535430 1154999 2309998 5774995 8084993 11549990 16169986 40424965 80849930