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7920412 = 221980103
BaseRepresentation
bin11110001101101100011100
3112220101202121
4132031230130
54011423122
6441432324
7124215403
oct36155434
915811677
107920412
11451a7a5
12279b6a4
131844146
1410a263a
15a66bc7
hex78db1c

7920412 has 6 divisors (see below), whose sum is σ = 13860728. Its totient is φ = 3960204.

The previous prime is 7920401. The next prime is 7920431. The reversal of 7920412 is 2140297.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 990048 + ... + 990055.

Almost surely, 27920412 is an apocalyptic number.

It is an amenable number.

7920412 is a deficient number, since it is larger than the sum of its proper divisors (5940316).

7920412 is a wasteful number, since it uses less digits than its factorization.

7920412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980107 (or 1980105 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 7920412 is about 2814.3226538547. The cubic root of 7920412 is about 199.3345550373.

The spelling of 7920412 in words is "seven million, nine hundred twenty thousand, four hundred twelve".

Divisors: 1 2 4 1980103 3960206 7920412