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30042030 = 2351001401
BaseRepresentation
bin111001010011…
…0011110101110
32002112021220210
41302212132232
530142321110
62551523250
7513232044
oct162463656
962467823
1030042030
1115a5a027
12a089526
1362bb165
143dc0394
152986520
hex1ca67ae

30042030 has 16 divisors (see below), whose sum is σ = 72100944. Its totient is φ = 8011200.

The previous prime is 30042013. The next prime is 30042031. The reversal of 30042030 is 3024003.

It is a junction number, because it is equal to n+sod(n) for n = 30041997 and 30042015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30042031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500671 + ... + 500730.

It is an arithmetic number, because the mean of its divisors is an integer number (4506309).

Almost surely, 230042030 is an apocalyptic number.

30042030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30042030 is an abundant number, since it is smaller than the sum of its proper divisors (42058914).

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

30042030 is a wasteful number, since it uses less digits than its factorization.

30042030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001411.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 30042030 is about 5481.0610286695. The cubic root of 30042030 is about 310.8682906408.

Adding to 30042030 its reverse (3024003), we get a palindrome (33066033).

The spelling of 30042030 in words is "thirty million, forty-two thousand, thirty", and thus it is an eban number.

Divisors: 1 2 3 5 6 10 15 30 1001401 2002802 3004203 5007005 6008406 10014010 15021015 30042030