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30119970 = 23561109151
BaseRepresentation
bin111001011100…
…1100000100010
32002200020211110
41302321200202
530202314340
62553324150
7514005216
oct162714042
962606743
1030119970
1116002641
12a106656
13631778a
144000946
15299e680
hex1cb9822

30119970 has 64 divisors (see below), whose sum is σ = 74638080. Its totient is φ = 7776000.

The previous prime is 30119963. The next prime is 30119989. The reversal of 30119970 is 7991103.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 31 ways as a sum of consecutive naturals, for example, 199395 + ... + 199545.

It is an arithmetic number, because the mean of its divisors is an integer number (1166220).

Almost surely, 230119970 is an apocalyptic number.

30119970 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 30119970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37319040).

30119970 is an abundant number, since it is smaller than the sum of its proper divisors (44518110).

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

30119970 is a wasteful number, since it uses less digits than its factorization.

30119970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331.

The product of its (nonzero) digits is 1701, while the sum is 30.

The square root of 30119970 is about 5488.1663604523. The cubic root of 30119970 is about 311.1368937911.

The spelling of 30119970 in words is "thirty million, one hundred nineteen thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 61 109 122 151 183 218 302 305 327 366 453 545 610 654 755 906 915 1090 1510 1635 1830 2265 3270 4530 6649 9211 13298 16459 18422 19947 27633 32918 33245 39894 46055 49377 55266 66490 82295 92110 98754 99735 138165 164590 199470 246885 276330 493770 1003999 2007998 3011997 5019995 6023994 10039990 15059985 30119970