Search a number
-
+
30512 = 241907
BaseRepresentation
bin111011100110000
31112212002
413130300
51434022
6353132
7154646
oct73460
945762
1030512
1120a19
12157a8
1310b71
14b196
159092
hex7730

30512 has 10 divisors (see below), whose sum is σ = 59148. Its totient is φ = 15248.

The previous prime is 30509. The next prime is 30517. The reversal of 30512 is 21503.

Subtracting from 30512 its reverse (21503), we obtain a palindrome (9009).

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 30493 and 30502.

It is not an unprimeable number, because it can be changed into a prime (30517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 938 + ... + 969.

230512 is an apocalyptic number.

It is an amenable number.

30512 is a deficient number, since it is larger than the sum of its proper divisors (28636).

30512 is a wasteful number, since it uses less digits than its factorization.

30512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915 (or 1909 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 30512 is about 174.6768444872. The cubic root of 30512 is about 31.2480958840.

The spelling of 30512 in words is "thirty thousand, five hundred twelve".

Divisors: 1 2 4 8 16 1907 3814 7628 15256 30512