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8165442 = 234331649
BaseRepresentation
bin11111001001100001000010
3120100211212210
4133021201002
54042243232
6451002550
7126255645
oct37114102
916324783
108165442
1146778aa
122899456
1318cb82c
141127a5c
15ab45cc
hex7c9842

8165442 has 16 divisors (see below), whose sum is σ = 16711200. Its totient is φ = 2658432.

The previous prime is 8165429. The next prime is 8165447. The reversal of 8165442 is 2445618.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (8165447) 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, 15567 + ... + 16082.

It is an arithmetic number, because the mean of its divisors is an integer number (1044450).

Almost surely, 28165442 is an apocalyptic number.

8165442 is an abundant number, since it is smaller than the sum of its proper divisors (8545758).

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

8165442 is a wasteful number, since it uses less digits than its factorization.

8165442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31697.

The product of its digits is 7680, while the sum is 30.

The square root of 8165442 is about 2857.5237531821. The cubic root of 8165442 is about 201.3692872016.

The spelling of 8165442 in words is "eight million, one hundred sixty-five thousand, four hundred forty-two".

Divisors: 1 2 3 6 43 86 129 258 31649 63298 94947 189894 1360907 2721814 4082721 8165442