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71022 = 2371989
BaseRepresentation
bin10001010101101110
310121102110
4101111232
54233042
61304450
7414030
oct212556
9117373
1071022
11493a6
1235126
1326433
141bc50
151609c
hex1156e

71022 has 32 divisors (see below), whose sum is σ = 172800. Its totient is φ = 19008.

The previous prime is 71011. The next prime is 71023. The reversal of 71022 is 22017.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 70989 and 71007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 754 + ... + 842.

It is an arithmetic number, because the mean of its divisors is an integer number (5400).

271022 is an apocalyptic number.

It is a pronic number, being equal to 266×267.

It is a practical number, because each smaller number is the sum of distinct divisors of 71022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86400).

71022 is an abundant number, since it is smaller than the sum of its proper divisors (101778).

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

71022 is a wasteful number, since it uses less digits than its factorization.

71022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120.

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 71022 is about 266.4995309564. The cubic root of 71022 is about 41.4124539535.

Adding to 71022 its reverse (22017), we get a palindrome (93039).

The spelling of 71022 in words is "seventy-one thousand, twenty-two", and thus it is an iban number.