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74000871 = 347130513
BaseRepresentation
bin1000110100100…
…10100111100111
312011020122010000
410122102213213
5122421011441
611202032343
71555665660
oct432224747
9164218100
1074000871
1138853a4a
12209486b3
131243c8c9
149b84367
15676b2b6
hex46929e7

74000871 has 20 divisors (see below), whose sum is σ = 126337552. Its totient is φ = 42285888.

The previous prime is 74000791. The next prime is 74000917. The reversal of 74000871 is 17800047.

It is not a de Polignac number, because 74000871 - 29 = 74000359 is a prime.

It is a super-2 number, since 2×740008712 = 10952257817517282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74000671) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 64690 + ... + 65823.

Almost surely, 274000871 is an apocalyptic number.

74000871 is a deficient number, since it is larger than the sum of its proper divisors (52336681).

74000871 is a wasteful number, since it uses less digits than its factorization.

74000871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130532 (or 130523 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 74000871 is about 8602.3758927403. The cubic root of 74000871 is about 419.8352925595.

The spelling of 74000871 in words is "seventy-four million, eight hundred seventy-one", and thus it is an aban number.

Divisors: 1 3 7 9 21 27 63 81 189 567 130513 391539 913591 1174617 2740773 3523851 8222319 10571553 24666957 74000871