Search a number
-
+
8090918780 = 2257311864267
BaseRepresentation
bin1111000100100000…
…11001111101111100
3202212212111021000112
413202100121331330
5113032233400110
63414504245152
7404333450330
oct74220317574
922785437015
108090918780
11348212703a
1216997707b8
139bc327309
1456a7b37c0
153254a9405
hex1e2419f7c

8090918780 has 48 divisors (see below), whose sum is σ = 20044609536. Its totient is φ = 2684543040.

The previous prime is 8090918707. The next prime is 8090918791. The reversal of 8090918780 is 878190908.

It is a happy number.

It is a congruent number.

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, 927794 + ... + 936473.

It is an arithmetic number, because the mean of its divisors is an integer number (417596032).

Almost surely, 28090918780 is an apocalyptic number.

It is an amenable number.

8090918780 is an abundant number, since it is smaller than the sum of its proper divisors (11953690756).

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

8090918780 is a wasteful number, since it uses less digits than its factorization.

8090918780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864314 (or 1864312 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 50.

The square root of 8090918780 is about 89949.5346291464. The cubic root of 8090918780 is about 2007.5480426896.

The spelling of 8090918780 in words is "eight billion, ninety million, nine hundred eighteen thousand, seven hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 31 35 62 70 124 140 155 217 310 434 620 868 1085 2170 4340 1864267 3728534 7457068 9321335 13049869 18642670 26099738 37285340 52199476 57792277 65249345 115584554 130498690 231169108 260997380 288961385 404545939 577922770 809091878 1155845540 1618183756 2022729695 4045459390 8090918780