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71444912 = 2471157991
BaseRepresentation
bin1000100001000…
…10100110110000
311222102202222212
410100202212300
5121242214122
611031151252
71525162130
oct420424660
9158382885
1071444912
1137368690
121bb15528
1311a563c6
1496baac0
156413ce2
hex44229b0

71444912 has 40 divisors (see below), whose sum is σ = 172584192. Its totient is φ = 27835200.

The previous prime is 71444909. The next prime is 71444917. The reversal of 71444912 is 21944417.

It is not an unprimeable number, because it can be changed into a prime (71444917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27764 + ... + 30227.

Almost surely, 271444912 is an apocalyptic number.

It is an amenable number.

71444912 is an abundant number, since it is smaller than the sum of its proper divisors (101139280).

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

71444912 is a wasteful number, since it uses less digits than its factorization.

71444912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58017 (or 58011 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 71444912 is about 8452.5092132455. The cubic root of 71444912 is about 414.9449038968.

The spelling of 71444912 in words is "seventy-one million, four hundred forty-four thousand, nine hundred twelve".

Divisors: 1 2 4 7 8 11 14 16 22 28 44 56 77 88 112 154 176 308 616 1232 57991 115982 231964 405937 463928 637901 811874 927856 1275802 1623748 2551604 3247496 4465307 5103208 6494992 8930614 10206416 17861228 35722456 71444912