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30407345906 = 2731602911621
BaseRepresentation
bin11100010100011010…
…110100011011110010
32220111010210012220112
4130110122310123302
5444233240032111
621545142541322
72124344114150
oct342432643362
986433705815
1030407345906
1111994177043
125a87437842
132b378a9192
1416865a23d0
15bce78de8b
hex7146b46f2

30407345906 has 32 divisors (see below), whose sum is σ = 53821946880. Its totient is φ = 12608164800.

The previous prime is 30407345887. The next prime is 30407345911. The reversal of 30407345906 is 60954370403.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2610776 + ... + 2622396.

It is an arithmetic number, because the mean of its divisors is an integer number (1681935840).

Almost surely, 230407345906 is an apocalyptic number.

30407345906 is a deficient number, since it is larger than the sum of its proper divisors (23414600974).

30407345906 is a wasteful number, since it uses less digits than its factorization.

30407345906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17690.

The product of its (nonzero) digits is 272160, while the sum is 41.

The spelling of 30407345906 in words is "thirty billion, four hundred seven million, three hundred forty-five thousand, nine hundred six".

Divisors: 1 2 7 14 31 62 217 434 6029 11621 12058 23242 42203 81347 84406 162694 186899 360251 373798 720502 1308293 2521757 2616586 5043514 70063009 140126018 490441063 980882126 2171953279 4343906558 15203672953 30407345906