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80081950 = 25213123203
BaseRepresentation
bin1001100010111…
…11010000011110
312120200120210011
410301133100132
5131000110300
611540233434
71661454034
oct461372036
9176616704
1080081950
1141227833
122299b87a
131378b790
14a8c8554
15706ceba
hex4c5f41e

80081950 has 24 divisors (see below), whose sum is σ = 160411608. Its totient is φ = 29568480.

The previous prime is 80081921. The next prime is 80081957. The reversal of 80081950 is 5918008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80081957) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60952 + ... + 62251.

It is an arithmetic number, because the mean of its divisors is an integer number (6683817).

Almost surely, 280081950 is an apocalyptic number.

80081950 is an abundant number, since it is smaller than the sum of its proper divisors (80329658).

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

80081950 is a wasteful number, since it uses less digits than its factorization.

80081950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123228 (or 123223 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 80081950 is about 8948.8518816662. The cubic root of 80081950 is about 431.0340177319.

Adding to 80081950 its reverse (5918008), we get a palindrome (85999958).

The spelling of 80081950 in words is "eighty million, eighty-one thousand, nine hundred fifty".

Divisors: 1 2 5 10 13 25 26 50 65 130 325 650 123203 246406 616015 1232030 1601639 3080075 3203278 6160150 8008195 16016390 40040975 80081950