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3215340045 = 32571452001
BaseRepresentation
bin1011111110100110…
…0011001000001101
322022002020012100100
42333221203020031
523041111340140
61251015521313
7142451640141
oct27751431015
98262205310
103215340045
1113aaa80625
12758989239
133c31acb98
1422705d221
1513c42d530
hexbfa6320d

3215340045 has 12 divisors (see below), whose sum is σ = 5573256156. Its totient is φ = 1714848000.

The previous prime is 3215340041. The next prime is 3215340091. The reversal of 3215340045 is 5400435123.

3215340045 is a `hidden beast` number, since 3 + 215 + 3 + 400 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1370036196 + 1845303849 = 37014^2 + 42957^2 .

It is not a de Polignac number, because 3215340045 - 22 = 3215340041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3215340041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35725956 + ... + 35726045.

It is an arithmetic number, because the mean of its divisors is an integer number (464438013).

Almost surely, 23215340045 is an apocalyptic number.

It is an amenable number.

3215340045 is a deficient number, since it is larger than the sum of its proper divisors (2357916111).

3215340045 is a wasteful number, since it uses less digits than its factorization.

3215340045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71452012 (or 71452009 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 3215340045 is about 56703.9685119128. The cubic root of 3215340045 is about 1475.9635638327.

Adding to 3215340045 its reverse (5400435123), we get a palindrome (8615775168).

The spelling of 3215340045 in words is "three billion, two hundred fifteen million, three hundred forty thousand, forty-five".

Divisors: 1 3 5 9 15 45 71452001 214356003 357260005 643068009 1071780015 3215340045