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30280885973 = 138231282991
BaseRepresentation
bin11100001100111000…
…011010011011010101
32220011022211101111022
4130030320122123111
5444003401322343
621524424250525
72121250166252
oct341470323325
986138741438
1030280885973
11119298528a8
125a51010a45
132b1762cb10
141673884429
15bc360e568
hex70ce1a6d5

30280885973 has 8 divisors (see below), whose sum is σ = 32614262016. Its totient is φ = 27948092400.

The previous prime is 30280885969. The next prime is 30280885991. The reversal of 30280885973 is 37958808203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30280885973 - 22 = 30280885969 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30280885373) 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, 34493 + ... + 248498.

It is an arithmetic number, because the mean of its divisors is an integer number (4076782752).

Almost surely, 230280885973 is an apocalyptic number.

It is an amenable number.

30280885973 is a deficient number, since it is larger than the sum of its proper divisors (2333376043).

30280885973 is a wasteful number, since it uses less digits than its factorization.

30280885973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291235.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 30280885973 in words is "thirty billion, two hundred eighty million, eight hundred eighty-five thousand, nine hundred seventy-three".

Divisors: 1 13 8231 107003 282991 3678883 2329298921 30280885973