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7230020 = 2257431201
BaseRepresentation
bin11011100101001001000100
3111121022201112
4123211021010
53322330040
6414544152
7115311530
oct33451104
914538645
107230020
114099026
122508058
131661b25
14d62bc0
1597c365
hex6e5244

7230020 has 48 divisors (see below), whose sum is σ = 17770368. Its totient is φ = 2419200.

The previous prime is 7229969. The next prime is 7230023. The reversal of 7230020 is 200327.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 7229977 and 7230004.

It is not an unprimeable number, because it can be changed into a prime (7230023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5420 + ... + 6620.

It is an arithmetic number, because the mean of its divisors is an integer number (370216).

Almost surely, 27230020 is an apocalyptic number.

7230020 is a gapful number since it is divisible by the number (70) 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 7230020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8885184).

7230020 is an abundant number, since it is smaller than the sum of its proper divisors (10540348).

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

7230020 is a wasteful number, since it uses less digits than its factorization.

7230020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260 (or 1258 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 14.

The square root of 7230020 is about 2688.8696509872. The cubic root of 7230020 is about 193.3658750877.

Adding to 7230020 its reverse (200327), we get a palindrome (7430347).

The spelling of 7230020 in words is "seven million, two hundred thirty thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 43 70 86 140 172 215 301 430 602 860 1201 1204 1505 2402 3010 4804 6005 6020 8407 12010 16814 24020 33628 42035 51643 84070 103286 168140 206572 258215 361501 516430 723002 1032860 1446004 1807505 3615010 7230020