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30404130 = 2351013471
BaseRepresentation
bin111001111111…
…0111000100010
32010012200121220
41303332320202
530240413010
63003355510
7516300531
oct163767042
963180556
1030404130
1116187089
12a222b96
1363b6c13
144076318
152a08970
hex1cfee22

30404130 has 16 divisors (see below), whose sum is σ = 72969984. Its totient is φ = 8107760.

The previous prime is 30404111. The next prime is 30404167. The reversal of 30404130 is 3140403.

It is a super-2 number, since 2×304041302 = 1848822242113800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 506706 + ... + 506765.

It is an arithmetic number, because the mean of its divisors is an integer number (4560624).

Almost surely, 230404130 is an apocalyptic number.

30404130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30404130 is an abundant number, since it is smaller than the sum of its proper divisors (42565854).

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

30404130 is a wasteful number, since it uses less digits than its factorization.

30404130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013481.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 30404130 is about 5513.9940152307. The cubic root of 30404130 is about 312.1122828937.

Adding to 30404130 its reverse (3140403), we get a palindrome (33544533).

The spelling of 30404130 in words is "thirty million, four hundred four thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 1013471 2026942 3040413 5067355 6080826 10134710 15202065 30404130