Search a number
-
+
30302012 = 2213582731
BaseRepresentation
bin111001110010…
…1111100111100
32010000111112202
41303211330330
530224131022
63001251032
7515364026
oct163457474
963014482
1030302012
1116117394
12a193a78
13637c5b0
14404b016
1529d8592
hex1ce5f3c

30302012 has 12 divisors (see below), whose sum is σ = 57107736. Its totient is φ = 13985520.

The previous prime is 30302011. The next prime is 30302033. The reversal of 30302012 is 21020303.

It is a junction number, because it is equal to n+sod(n) for n = 30301984 and 30302002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30302011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291314 + ... + 291417.

It is an arithmetic number, because the mean of its divisors is an integer number (4758978).

Almost surely, 230302012 is an apocalyptic number.

It is an amenable number.

30302012 is a deficient number, since it is larger than the sum of its proper divisors (26805724).

30302012 is a wasteful number, since it uses less digits than its factorization.

30302012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582748 (or 582746 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 30302012 is about 5504.7263328889. The cubic root of 30302012 is about 311.7624616484.

Adding to 30302012 its reverse (21020303), we get a palindrome (51322315).

The spelling of 30302012 in words is "thirty million, three hundred two thousand, twelve".

Divisors: 1 2 4 13 26 52 582731 1165462 2330924 7575503 15151006 30302012