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71948950 = 2521438979
BaseRepresentation
bin1000100100111…
…01101010010110
312000101101101221
410102131222112
5121404331300
611050040554
71532361463
oct422355226
9160341357
1071948950
1137682347
122011915a
1311ba1958
1497ac66a
1564b331a
hex449da96

71948950 has 12 divisors (see below), whose sum is σ = 133825140. Its totient is φ = 28779560.

The previous prime is 71948909. The next prime is 71948977. The reversal of 71948950 is 5984917.

It is a super-2 number, since 2×719489502 = 10353302812205000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71948897 and 71948906.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 719440 + ... + 719539.

It is an arithmetic number, because the mean of its divisors is an integer number (11152095).

Almost surely, 271948950 is an apocalyptic number.

71948950 is a deficient number, since it is larger than the sum of its proper divisors (61876190).

71948950 is a wasteful number, since it uses less digits than its factorization.

71948950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438991 (or 1438986 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 71948950 is about 8482.2726907357. The cubic root of 71948950 is about 415.9184188827.

The spelling of 71948950 in words is "seventy-one million, nine hundred forty-eight thousand, nine hundred fifty".

Divisors: 1 2 5 10 25 50 1438979 2877958 7194895 14389790 35974475 71948950