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7920268 = 221980067
BaseRepresentation
bin11110001101101010001100
3112220101120021
4132031222030
54011422033
6441431524
7124215106
oct36155214
915811507
107920268
11451a684
12279b5a4
131844065
1410a2576
15a66b2d
hex78da8c

7920268 has 6 divisors (see below), whose sum is σ = 13860476. Its totient is φ = 3960132.

The previous prime is 7920259. The next prime is 7920287. The reversal of 7920268 is 8620297.

7920268 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990030 + ... + 990037.

Almost surely, 27920268 is an apocalyptic number.

It is an amenable number.

7920268 is a deficient number, since it is larger than the sum of its proper divisors (5940208).

7920268 is a wasteful number, since it uses less digits than its factorization.

7920268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980071 (or 1980069 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 7920268 is about 2814.2970703179. The cubic root of 7920268 is about 199.3333470046. Note that the first 4 decimals are identical.

The spelling of 7920268 in words is "seven million, nine hundred twenty thousand, two hundred sixty-eight".

Divisors: 1 2 4 1980067 3960134 7920268