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7612420 = 225380621
BaseRepresentation
bin11101000010100000000100
3112022202021111
4131002200010
53422044140
6431054404
7121463434
oct35024004
915282244
107612420
11432a362
122671404
131766bba
1410222c4
15a057ea
hex742804

7612420 has 12 divisors (see below), whose sum is σ = 15986124. Its totient is φ = 3044960.

The previous prime is 7612403. The next prime is 7612427. The reversal of 7612420 is 242167.

It can be written as a sum of positive squares in 2 ways, for example, as 1048576 + 6563844 = 1024^2 + 2562^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7612391 and 7612400.

It is not an unprimeable number, because it can be changed into a prime (7612427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190291 + ... + 190330.

It is an arithmetic number, because the mean of its divisors is an integer number (1332177).

Almost surely, 27612420 is an apocalyptic number.

It is an amenable number.

7612420 is an abundant number, since it is smaller than the sum of its proper divisors (8373704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7612420 is a wasteful number, since it uses less digits than its factorization.

7612420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380630 (or 380628 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 7612420 is about 2759.0614346187. The cubic root of 7612420 is about 196.7165566557.

Adding to 7612420 its reverse (242167), we get a palindrome (7854587).

The spelling of 7612420 in words is "seven million, six hundred twelve thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 380621 761242 1522484 1903105 3806210 7612420