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30402030 = 2351013401
BaseRepresentation
bin111001111111…
…0010111101110
32010012120202010
41303332113232
530240331110
63003342050
7516261441
oct163762756
963176663
1030402030
111618554a
12a221926
1363b5c89
144075658
152a08020
hex1cfe5ee

30402030 has 16 divisors (see below), whose sum is σ = 72964944. Its totient is φ = 8107200.

The previous prime is 30402023. The next prime is 30402077. The reversal of 30402030 is 3020403.

It is a super-3 number, since 3×304020303 (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30401997 and 30402015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506671 + ... + 506730.

It is an arithmetic number, because the mean of its divisors is an integer number (4560309).

Almost surely, 230402030 is an apocalyptic number.

30402030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30402030 is an abundant number, since it is smaller than the sum of its proper divisors (42562914).

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

30402030 is a wasteful number, since it uses less digits than its factorization.

30402030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013411.

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

The square root of 30402030 is about 5513.8035873615. The cubic root of 30402030 is about 312.1050969085.

Adding to 30402030 its reverse (3020403), we get a palindrome (33422433).

The spelling of 30402030 in words is "thirty million, four hundred two thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 1013401 2026802 3040203 5067005 6080406 10134010 15201015 30402030