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8021092741 = 66949119809
BaseRepresentation
bin1110111100001100…
…00010100110000101
3202201000002201200221
413132012002212011
5112411344431431
63403531504341
7402525110014
oct73606024605
922630081627
108021092741
113446774772
12167a2b80b1
139aaa19a2c
145613d8a7b
1531e2b5111
hex1de182985

8021092741 has 4 divisors (see below), whose sum is σ = 8021279500. Its totient is φ = 8020905984.

The previous prime is 8021092633. The next prime is 8021092747. The reversal of 8021092741 is 1472901208.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7713230625 + 307862116 = 87825^2 + 17546^2 .

It is a cyclic number.

It is not a de Polignac number, because 8021092741 - 219 = 8020568453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8021092697 and 8021092706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8021092747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7045 + ... + 126853.

It is an arithmetic number, because the mean of its divisors is an integer number (2005319875).

Almost surely, 28021092741 is an apocalyptic number.

It is an amenable number.

8021092741 is a deficient number, since it is larger than the sum of its proper divisors (186759).

8021092741 is a wasteful number, since it uses less digits than its factorization.

8021092741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186758.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 8021092741 is about 89560.5534875706. The cubic root of 8021092741 is about 2001.7561858709.

Adding to 8021092741 its reverse (1472901208), we get a palindrome (9493993949).

The spelling of 8021092741 in words is "eight billion, twenty-one million, ninety-two thousand, seven hundred forty-one".

Divisors: 1 66949 119809 8021092741