Search a number
-
+
30797800 = 23521113999
BaseRepresentation
bin111010101111…
…0111111101000
32010221200122021
41311132333220
530341012200
63020034224
7522530335
oct165367750
963850567
1030797800
1116425930
12a392974
1364c4167
14413998c
152a8541a
hex1d5efe8

30797800 has 48 divisors (see below), whose sum is σ = 78120000. Its totient is φ = 11198400.

The previous prime is 30797777. The next prime is 30797807. The reversal of 30797800 is 879703.

It is not an unprimeable number, because it can be changed into a prime (30797807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4800 + ... + 9199.

It is an arithmetic number, because the mean of its divisors is an integer number (1627500).

Almost surely, 230797800 is an apocalyptic number.

It is an amenable number.

30797800 is an abundant number, since it is smaller than the sum of its proper divisors (47322200).

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

30797800 is a wasteful number, since it uses less digits than its factorization.

30797800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14026 (or 14017 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 30797800 is about 5549.5765604233. The cubic root of 30797800 is about 313.4535779123.

The spelling of 30797800 in words is "thirty million, seven hundred ninety-seven thousand, eight hundred".

Divisors: 1 2 4 5 8 10 11 20 22 25 40 44 50 55 88 100 110 200 220 275 440 550 1100 2200 13999 27998 55996 69995 111992 139990 153989 279980 307978 349975 559960 615956 699950 769945 1231912 1399900 1539890 2799800 3079780 3849725 6159560 7699450 15398900 30797800