Search a number
-
+
30197310 = 23511137039
BaseRepresentation
bin111001100110…
…0011000111110
32002211011220220
41303030120332
530212303220
62555122210
7514446543
oct163143076
962734826
1030197310
1116055760
12a143366
136343a40
144020bca
1529b7540
hex1ccc63e

30197310 has 64 divisors (see below), whose sum is σ = 85155840. Its totient is φ = 6756480.

The previous prime is 30197303. The next prime is 30197311. The reversal of 30197310 is 1379103.

It is a super-2 number, since 2×301973102 = 1823755062472200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30197311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 771 + ... + 7809.

It is an arithmetic number, because the mean of its divisors is an integer number (1330560).

Almost surely, 230197310 is an apocalyptic number.

30197310 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30197310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42577920).

30197310 is an abundant number, since it is smaller than the sum of its proper divisors (54958530).

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

30197310 is a wasteful number, since it uses less digits than its factorization.

30197310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7073.

The product of its (nonzero) digits is 567, while the sum is 24.

The square root of 30197310 is about 5495.2079123542. The cubic root of 30197310 is about 311.4029715311.

The spelling of 30197310 in words is "thirty million, one hundred ninety-seven thousand, three hundred ten".

Divisors: 1 2 3 5 6 10 11 13 15 22 26 30 33 39 55 65 66 78 110 130 143 165 195 286 330 390 429 715 858 1430 2145 4290 7039 14078 21117 35195 42234 70390 77429 91507 105585 154858 183014 211170 232287 274521 387145 457535 464574 549042 774290 915070 1006577 1161435 1372605 2013154 2322870 2745210 3019731 5032885 6039462 10065770 15098655 30197310