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7289996 = 2271971193
BaseRepresentation
bin11011110011110010001100
3111201100222212
4123303302030
53331234441
6420125552
7115651430
oct33636214
914640885
107289996
11412a09a
1225368b8
13168320c
14d7a9c0
1598eeeb
hex6f3c8c

7289996 has 48 divisors (see below), whose sum is σ = 15644160. Its totient is φ = 2903040.

The previous prime is 7289993. The next prime is 7290001. The reversal of 7289996 is 6999827.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7289993) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 37676 + ... + 37868.

It is an arithmetic number, because the mean of its divisors is an integer number (325920).

Almost surely, 27289996 is an apocalyptic number.

7289996 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7289996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7822080).

7289996 is an abundant number, since it is smaller than the sum of its proper divisors (8354164).

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

7289996 is a wasteful number, since it uses less digits than its factorization.

7289996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 292 counting only the distinct ones).

The product of its digits is 489888, while the sum is 50.

The square root of 7289996 is about 2699.9992592592. Note that the first 3 decimals coincide. The cubic root of 7289996 is about 193.8990866389.

The spelling of 7289996 in words is "seven million, two hundred eighty-nine thousand, nine hundred ninety-six".

Divisors: 1 2 4 7 14 19 28 38 71 76 133 142 193 266 284 386 497 532 772 994 1349 1351 1988 2698 2702 3667 5396 5404 7334 9443 13703 14668 18886 25669 27406 37772 51338 54812 95921 102676 191842 260357 383684 520714 1041428 1822499 3644998 7289996