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8212061 = 111357427
BaseRepresentation
bin11111010100111001011101
3120110012211102
4133110321131
54100241221
6452002445
7126541604
oct37247135
916405742
108212061
1146a9930
122900425
131916b10
14113aa3b
15ac330b
hex7d4e5d

8212061 has 8 divisors (see below), whose sum is σ = 9647904. Its totient is φ = 6891120.

The previous prime is 8212021. The next prime is 8212063. The reversal of 8212061 is 1602128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-8212061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8212063) 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, 28571 + ... + 28856.

It is an arithmetic number, because the mean of its divisors is an integer number (1205988).

Almost surely, 28212061 is an apocalyptic number.

It is an amenable number.

8212061 is a deficient number, since it is larger than the sum of its proper divisors (1435843).

8212061 is a wasteful number, since it uses less digits than its factorization.

8212061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57451.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 8212061 is about 2865.6693807905. The cubic root of 8212061 is about 201.7517864233.

Adding to 8212061 its reverse (1602128), we get a palindrome (9814189).

It can be divided in two parts, 821 and 2061, that added together give a palindrome (2882).

The spelling of 8212061 in words is "eight million, two hundred twelve thousand, sixty-one".

Divisors: 1 11 13 143 57427 631697 746551 8212061