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80750660 = 22531139937
BaseRepresentation
bin1001101000000…
…10100001000100
312121221120002012
410310002201010
5131133010120
612002433352
72000240444
oct464024104
9177846065
1080750660
1141644191
1223062858
1313963c73
14aa20124
1571511c5
hex4d02844

80750660 has 48 divisors (see below), whose sum is σ = 176494080. Its totient is φ = 31000320.

The previous prime is 80750609. The next prime is 80750669. The reversal of 80750660 is 6605708.

It is not an unprimeable number, because it can be changed into a prime (80750669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85712 + ... + 86648.

It is an arithmetic number, because the mean of its divisors is an integer number (3676960).

Almost surely, 280750660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80750660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88247040).

80750660 is an abundant number, since it is smaller than the sum of its proper divisors (95743420).

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

80750660 is a wasteful number, since it uses less digits than its factorization.

80750660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116 (or 1114 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 80750660 is about 8986.1371011130. The cubic root of 80750660 is about 432.2304511748.

The spelling of 80750660 in words is "eighty million, seven hundred fifty thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 31 62 124 139 155 278 310 556 620 695 937 1390 1874 2780 3748 4309 4685 8618 9370 17236 18740 21545 29047 43090 58094 86180 116188 130243 145235 260486 290470 520972 580940 651215 1302430 2604860 4037533 8075066 16150132 20187665 40375330 80750660