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7245980 = 225773709
BaseRepresentation
bin11011101001000010011100
3111122010121122
4123221002130
53323332410
6415150112
7115406210
oct33510234
914563548
107245980
1140aa015
122515338
131669181
14d68940
15981e55
hex6e909c

7245980 has 48 divisors (see below), whose sum is σ = 17653440. Its totient is φ = 2446848.

The previous prime is 7245949. The next prime is 7245991. The reversal of 7245980 is 895427.

It is a happy number.

It is a super-3 number, since 3×72459803 (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 7245980.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9866 + ... + 10574.

It is an arithmetic number, because the mean of its divisors is an integer number (367780).

Almost surely, 27245980 is an apocalyptic number.

7245980 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 7245980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8826720).

7245980 is an abundant number, since it is smaller than the sum of its proper divisors (10407460).

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

7245980 is a wasteful number, since it uses less digits than its factorization.

7245980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 7245980 is about 2691.8358047994. The cubic root of 7245980 is about 193.5080531784.

The spelling of 7245980 in words is "seven million, two hundred forty-five thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 73 140 146 292 365 511 709 730 1022 1418 1460 2044 2555 2836 3545 4963 5110 7090 9926 10220 14180 19852 24815 49630 51757 99260 103514 207028 258785 362299 517570 724598 1035140 1449196 1811495 3622990 7245980