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3228415 = 5645683
BaseRepresentation
bin1100010100001011111111
320002000112221
430110023333
51311302130
6153110211
736304201
oct14241377
96060487
103228415
111905613
1210b8367
13890608
14600771
1543b87a
hex3142ff

3228415 has 4 divisors (see below), whose sum is σ = 3874104. Its totient is φ = 2582728.

The previous prime is 3228413. The next prime is 3228427. The reversal of 3228415 is 5148223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5148223 = 6198317.

It is a cyclic number.

It is not a de Polignac number, because 3228415 - 21 = 3228413 is a prime.

It is a Duffinian number.

3228415 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3228415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3228413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322837 + ... + 322846.

It is an arithmetic number, because the mean of its divisors is an integer number (968526).

Almost surely, 23228415 is an apocalyptic number.

3228415 is a deficient number, since it is larger than the sum of its proper divisors (645689).

3228415 is an equidigital number, since it uses as much as digits as its factorization.

3228415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645688.

The product of its digits is 1920, while the sum is 25.

The square root of 3228415 is about 1796.7790626563. The cubic root of 3228415 is about 147.7961492268.

The spelling of 3228415 in words is "three million, two hundred twenty-eight thousand, four hundred fifteen".

Divisors: 1 5 645683 3228415