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30124842 = 23111924023
BaseRepresentation
bin111001011101…
…0101100101010
32002200111111220
41302322230222
530202443332
62553402510
7514025346
oct162725452
962614456
1030124842
1116006270
12a109436
136319a67
144002626
1529a0d2c
hex1cbab2a

30124842 has 32 divisors (see below), whose sum is σ = 69189120. Its totient is φ = 8647920.

The previous prime is 30124841. The next prime is 30124859. The reversal of 30124842 is 24842103.

It is a super-2 number, since 2×301248422 = 1815012211049928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30124841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10758 + ... + 13265.

It is an arithmetic number, because the mean of its divisors is an integer number (2162160).

Almost surely, 230124842 is an apocalyptic number.

30124842 is an abundant number, since it is smaller than the sum of its proper divisors (39064278).

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

30124842 is a wasteful number, since it uses less digits than its factorization.

30124842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24058.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 30124842 is about 5488.6102066006. The cubic root of 30124842 is about 311.1536686774.

Adding to 30124842 its reverse (24842103), we get a palindrome (54966945).

The spelling of 30124842 in words is "thirty million, one hundred twenty-four thousand, eight hundred forty-two".