Search a number
-
+
7420070 = 257219797
BaseRepresentation
bin11100010011100010100110
3111221222102102
4130103202212
53344420240
6423012102
7120032600
oct34234246
914858372
107420070
114208899
12259a032
1316ca498
14db2170
159b8815
hex7138a6

7420070 has 48 divisors (see below), whose sum is σ = 16374960. Its totient is φ = 2407104.

The previous prime is 7420069. The next prime is 7420073. The reversal of 7420070 is 700247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7420073) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 8912 + ... + 9708.

It is an arithmetic number, because the mean of its divisors is an integer number (341145).

Almost surely, 27420070 is an apocalyptic number.

7420070 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7420070 is an abundant number, since it is smaller than the sum of its proper divisors (8954890).

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

7420070 is a wasteful number, since it uses less digits than its factorization.

7420070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 7420070 is about 2723.9805432492. The cubic root of 7420070 is about 195.0455295835.

The spelling of 7420070 in words is "seven million, four hundred twenty thousand, seventy".

Divisors: 1 2 5 7 10 14 19 35 38 49 70 95 98 133 190 245 266 490 665 797 931 1330 1594 1862 3985 4655 5579 7970 9310 11158 15143 27895 30286 39053 55790 75715 78106 106001 151430 195265 212002 390530 530005 742007 1060010 1484014 3710035 7420070