Search a number
-
+
30067808 = 252340853
BaseRepresentation
bin111001010110…
…0110001100000
32002120121021112
41302230301200
530144132213
62552242452
7513400151
oct162546140
962517245
1030067808
1115a77431
12a0a0428
1362c9b04
143dc9928
15298dea8
hex1cacc60

30067808 has 24 divisors (see below), whose sum is σ = 61771248. Its totient is φ = 14379904.

The previous prime is 30067789. The next prime is 30067811. The reversal of 30067808 is 80876003.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 19691 + ... + 21162.

It is an arithmetic number, because the mean of its divisors is an integer number (2573802).

Almost surely, 230067808 is an apocalyptic number.

It is an amenable number.

30067808 is an abundant number, since it is smaller than the sum of its proper divisors (31703440).

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

30067808 is a wasteful number, since it uses less digits than its factorization.

30067808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40886 (or 40878 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 30067808 is about 5483.4120764356. The cubic root of 30067808 is about 310.9571802380.

The spelling of 30067808 in words is "thirty million, sixty-seven thousand, eight hundred eight".

Divisors: 1 2 4 8 16 23 32 46 92 184 368 736 40853 81706 163412 326824 653648 939619 1307296 1879238 3758476 7516952 15033904 30067808