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3420651 = 313139631
BaseRepresentation
bin1101000011000111101011
320102210020210
431003013223
51333430101
6201152203
741034513
oct15030753
96383223
103420651
111a26a93
12118b663
13929c70
14650843
154787d6
hex3431eb

3420651 has 16 divisors (see below), whose sum is σ = 4954880. Its totient is φ = 2086560.

The previous prime is 3420649. The next prime is 3420653. The reversal of 3420651 is 1560243.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3420649) and next prime (3420653).

It is not a de Polignac number, because 3420651 - 21 = 3420649 is a prime.

It is the 1850-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3420653) by changing a digit.

It is a nontrivial repunit in base 1849.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5106 + ... + 5736.

It is an arithmetic number, because the mean of its divisors is an integer number (309680).

Almost surely, 23420651 is an apocalyptic number.

3420651 is a deficient number, since it is larger than the sum of its proper divisors (1534229).

3420651 is a wasteful number, since it uses less digits than its factorization.

3420651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 3420651 is about 1849.5002027575. The cubic root of 3420651 is about 150.6732845093.

Adding to 3420651 its reverse (1560243), we get a palindrome (4980894).

The spelling of 3420651 in words is "three million, four hundred twenty thousand, six hundred fifty-one".

Divisors: 1 3 13 39 139 417 631 1807 1893 5421 8203 24609 87709 263127 1140217 3420651