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71494211 = 179399409
BaseRepresentation
bin1000100001011…
…10101001000011
311222112021121202
410100232221003
5121300303321
611032211415
71525455635
oct420565103
9158467552
1071494211
11373a1728
121bb39b6b
1311a72989
1496d0a55
15642370b
hex442ea43

71494211 has 4 divisors (see below), whose sum is σ = 71893800. Its totient is φ = 71094624.

The previous prime is 71494151. The next prime is 71494219. The reversal of 71494211 is 11249417.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71494211 - 226 = 4385347 is a prime.

It is a super-2 number, since 2×714942112 = 10222844413025042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71494219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199526 + ... + 199883.

It is an arithmetic number, because the mean of its divisors is an integer number (17973450).

Almost surely, 271494211 is an apocalyptic number.

71494211 is a deficient number, since it is larger than the sum of its proper divisors (399589).

71494211 is a wasteful number, since it uses less digits than its factorization.

71494211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399588.

The product of its digits is 2016, while the sum is 29.

The square root of 71494211 is about 8455.4249449688. The cubic root of 71494211 is about 415.0403231734.

The spelling of 71494211 in words is "seventy-one million, four hundred ninety-four thousand, two hundred eleven".

Divisors: 1 179 399409 71494211