Search a number
-
+
7920672 = 25382507
BaseRepresentation
bin11110001101110000100000
3112220102010020
4132031300200
54011430142
6441433440
7124216224
oct36156040
915812106
107920672
11451aa11
12279b880
1318442b6
1410a2784
15a66cec
hex78dc20

7920672 has 24 divisors (see below), whose sum is σ = 20792016. Its totient is φ = 2640192.

The previous prime is 7920641. The next prime is 7920677. The reversal of 7920672 is 2760297.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (7920677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41158 + ... + 41349.

It is an arithmetic number, because the mean of its divisors is an integer number (866334).

Almost surely, 27920672 is an apocalyptic number.

It is an amenable number.

7920672 is an abundant number, since it is smaller than the sum of its proper divisors (12871344).

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

7920672 is a wasteful number, since it uses less digits than its factorization.

7920672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82520 (or 82512 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 7920672 is about 2814.3688457628. The cubic root of 7920672 is about 199.3367361703.

The spelling of 7920672 in words is "seven million, nine hundred twenty thousand, six hundred seventy-two".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 82507 165014 247521 330028 495042 660056 990084 1320112 1980168 2640224 3960336 7920672