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30908561430 = 2351030285381
BaseRepresentation
bin11100110010010010…
…110011100000010110
32221210001220121100110
4130302102303200112
51001300042431210
622111005423450
72142641302665
oct346222634026
987701817313
1030908561430
111212109374a
125ba726ab86
132bb7698606
1416d2d92ddc
15c0d797420
hex7324b3816

30908561430 has 16 divisors (see below), whose sum is σ = 74180547504. Its totient is φ = 8242283040.

The previous prime is 30908561381. The next prime is 30908561443. The reversal of 30908561430 is 3416580903.

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, 515142661 + ... + 515142720.

It is an arithmetic number, because the mean of its divisors is an integer number (4636284219).

Almost surely, 230908561430 is an apocalyptic number.

30908561430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30908561430 is an abundant number, since it is smaller than the sum of its proper divisors (43271986074).

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

30908561430 is a wasteful number, since it uses less digits than its factorization.

30908561430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030285391.

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 30908561430 in words is "thirty billion, nine hundred eight million, five hundred sixty-one thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 1030285381 2060570762 3090856143 5151426905 6181712286 10302853810 15454280715 30908561430