Search a number
-
+
30870084 = 2237367501
BaseRepresentation
bin111010111000…
…0101001000100
32011002100210110
41311300221010
530400320314
63021353020
7523251150
oct165605104
964070713
1030870084
1116475173
12a408770
13651b02b
144158060
152a9ba59
hex1d70a44

30870084 has 24 divisors (see below), whose sum is σ = 82320448. Its totient is φ = 8820000.

The previous prime is 30870061. The next prime is 30870109. The reversal of 30870084 is 48007803.

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 7 ways as a sum of consecutive naturals, for example, 183667 + ... + 183834.

Almost surely, 230870084 is an apocalyptic number.

It is an amenable number.

30870084 is an abundant number, since it is smaller than the sum of its proper divisors (51450364).

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

30870084 is a wasteful number, since it uses less digits than its factorization.

30870084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367515 (or 367513 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 30870084 is about 5556.0853125200. The cubic root of 30870084 is about 313.6986167924.

Adding to 30870084 its reverse (48007803), we get a palindrome (78877887).

The spelling of 30870084 in words is "thirty million, eight hundred seventy thousand, eighty-four".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 367501 735002 1102503 1470004 2205006 2572507 4410012 5145014 7717521 10290028 15435042 30870084