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71090364 = 22311515147
BaseRepresentation
bin1000011110011…
…00000010111100
311221202202122110
410033030002330
5121144342424
611015414020
71522154352
oct417140274
9157682573
1071090364
1137146274
121b984310
1311960c07
1496277d2
156393c29
hex43cc0bc

71090364 has 24 divisors (see below), whose sum is σ = 166053888. Its totient is φ = 23671600.

The previous prime is 71090359. The next prime is 71090399. The reversal of 71090364 is 46309017.

It is a happy number.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11239 + ... + 16385.

It is an arithmetic number, because the mean of its divisors is an integer number (6918912).

Almost surely, 271090364 is an apocalyptic number.

It is an amenable number.

71090364 is an abundant number, since it is smaller than the sum of its proper divisors (94963524).

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

71090364 is a wasteful number, since it uses less digits than its factorization.

71090364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6305 (or 6303 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 71090364 is about 8431.5101850143. The cubic root of 71090364 is about 414.2573722302.

The spelling of 71090364 in words is "seventy-one million, ninety thousand, three hundred sixty-four".

Divisors: 1 2 3 4 6 12 1151 2302 3453 4604 5147 6906 10294 13812 15441 20588 30882 61764 5924197 11848394 17772591 23696788 35545182 71090364