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30130680 = 2335257977
BaseRepresentation
bin111001011110…
…0000111111000
32002200210112010
41302330013320
530203140210
62553445520
7514051356
oct162740770
962623463
1030130680
111600a698
12a1108a0
13631c608
1440047d6
1529a2920
hex1cbc1f8

30130680 has 64 divisors (see below), whose sum is σ = 90836640. Its totient is φ = 7995392.

The previous prime is 30130673. The next prime is 30130687. The reversal of 30130680 is 8603103.

It is an interprime number because it is at equal distance from previous prime (30130673) and next prime (30130687).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30130687) 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, 30352 + ... + 31328.

Almost surely, 230130680 is an apocalyptic number.

30130680 is a gapful number since it is divisible by the number (30) 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 30130680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45418320).

30130680 is an abundant number, since it is smaller than the sum of its proper divisors (60705960).

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

30130680 is a wasteful number, since it uses less digits than its factorization.

30130680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248 (or 1244 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 30130680 is about 5489.1420094583. The cubic root of 30130680 is about 311.1737672369.

Adding to 30130680 its reverse (8603103), we get a palindrome (38733783).

It can be divided in two parts, 30 and 130680, that multiplied together give a square (3920400 = 19802).

The spelling of 30130680 in words is "thirty million, one hundred thirty thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 257 514 771 977 1028 1285 1542 1954 2056 2570 2931 3084 3855 3908 4885 5140 5862 6168 7710 7816 9770 10280 11724 14655 15420 19540 23448 29310 30840 39080 58620 117240 251089 502178 753267 1004356 1255445 1506534 2008712 2510890 3013068 3766335 5021780 6026136 7532670 10043560 15065340 30130680