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30406063771 = 307880311251
BaseRepresentation
bin11100010100010101…
…111011011010011011
32220111001101002011001
4130110111323122123
5444232423020041
621545055245431
72124330164146
oct342425733233
986431332131
1030406063771
1111993480826
125a86b19877
132b3754a715
14168634b05d
15bce5d9131
hex71457b69b

30406063771 has 8 divisors (see below), whose sum is σ = 30511283264. Its totient is φ = 30300885000.

The previous prime is 30406063747. The next prime is 30406063781. The reversal of 30406063771 is 17736060403.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30406063771 is a prime.

It is a super-3 number, since 3×304060637713 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30406063771.

It is not an unprimeable number, because it can be changed into a prime (30406063781) 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, 2696896 + ... + 2708146.

It is an arithmetic number, because the mean of its divisors is an integer number (3813910408).

Almost surely, 230406063771 is an apocalyptic number.

30406063771 is a deficient number, since it is larger than the sum of its proper divisors (105219493).

30406063771 is a wasteful number, since it uses less digits than its factorization.

30406063771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20361.

The product of its (nonzero) digits is 63504, while the sum is 37.

The spelling of 30406063771 in words is "thirty billion, four hundred six million, sixty-three thousand, seven hundred seventy-one".

Divisors: 1 307 8803 11251 2702521 3454057 99042553 30406063771